Help !!! freeze and stuck on grey screen, difficult to reboot, here is my EtreCheck report

Help !!! I experienced more and more issues since I upgraded to mavericks and i brought my MBP 15" (from 2011, out of warranty) to the Apple genius bar a couple of days after my computer started to freeze and crash on a grey screen with less and less possibility to reboot it (tried all advices i could find on the forums to reboot in other ways, etc. ). The overnight tests at Apple gave nothing, they just decided to reinitiate the software and concluded that the problem was solved.
But the problem happened again: when i reloaded my backup from Time Machine, i could run the whole process till the end then when I was asked to restart, I couldn’t open the finder, my screen was stuck on a light grey.
I could reboot it (always in maintaining the off button to stop the machine or in using the single mode) but it’s non stable, after too many manipulations, the screen freezes or divides in 2 parts with lines, etc. And I have to try again different ways to reboot…
I took a new appointment to the Apple Genius bar, but in the mean time, I tried to repair the authorizations, and I have to say that the list is really long, even if I did the operation more 3 times…
I think there is a software conflict somewhere and find the possibility to check the system with EtreCheck (thanks! I will also bring this paper to the Genius bar technician).
Please, would there be someone who could read this information and gives me some advices and opinion on what could be problematic, what to do etc.
In end, what is very weird to me:
I could read on this forum that “startup items” are no more necessary since OS 10.4. I tried to delete the ones that appear here in library/startupitems, and found another one which is not mentioned in this EtreCheck list : startouc
Also when I tried to delete those items, it was refused by the finder with the message saying that this items are in use…
Another point: I uninstalled the application Chiavetta Internet 42 a week ago when I started to have the problems. I was in Italy and this is a usb key with pin for internet. At the moment thought about a possible conflict with the key and deleted every item concerning this installation. This is because I don’t understand that it appears now in the “User login Items”.
Thank you so much in advance
Here is the EtreCheck report:
Hardware Information:
            MacBook Pro (15-inch, Early 2011)
            MacBook Pro - model: MacBookPro8,2
            1 2 GHz Intel Core i7 CPU: 4 cores
            8 GB RAM
Video Information:
            Intel HD Graphics 3000 - VRAM: 512 MB
            AMD Radeon HD 6490M - VRAM: 256 MB
System Software:
            OS X 10.9.2 (13C1021) - Uptime: 0 days 1:42:38
Disk Information:
            Hitachi HTS545050B9A302 disk0 : (500,11 GB)
                        EFI (disk0s1) <not mounted>: 209,7 MB
                  Macintosh HD (disk0s2) / [Startup]: 499,25 GB (219,23 GB free)
                        Recovery HD (disk0s3) <not mounted>: 650 MB
            MATSHITADVD-R   UJ-8A8
USB Information:
            Apple Inc. FaceTime HD Camera (Built-in)
            Apple Inc. BRCM2070 Hub
                        Apple Inc. Bluetooth USB Host Controller
            Apple Inc. Apple Internal Keyboard / Trackpad
            Apple Computer, Inc. IR Receiver
Thunderbolt Information:
            Apple Inc. thunderbolt_bus
Gatekeeper:
            Mac App Store and identified developers
Kernel Extensions:
            [not loaded]            com.MBB.driver.MBBACMData (5.00.02) Support
            [not loaded]            com.MBB.driver.MBBActivateDriver (1.0.14) Support
            [not loaded]            com.MBB.driver.MBBEthernetData (2.00.05) Support
            [not loaded]            com.palm.ClassicNotSeizeDriver (3.1) Support
            [not loaded]            com.wdc.driver.1394HP (1.0.9) Support
            [not loaded]            com.wdc.driver.USBHP (1.0.11) Support
Launch Daemons:
            [failed]            com.google.GoogleML.plist Support
            [failed]            com.google.keystone.daemon.plist Support
Launch Agents:
            [loaded]            com.hp.help.tocgenerator.plist Support
User Launch Agents:
            [loaded]            com.iLike.Agent.plist Support
User Login Items:
            Transport Monitor
            Firefox
            My Day
            Chiavetta Internet 42
            GoogleSoftwareUpdateAgent
Internet Plug-ins:
            Unity Web Player: Version: UnityPlayer version 4.2.1f4 - SDK 10.6 Support
            QuickTime Plugin: Version: 7.7.3
            Default Browser: Version: 537 - SDK 10.9
            OfficeLiveBrowserPlugin: Version: 12.3.6 Support
            Google Earth Web Plug-in: Version: 7.1 Support
            Mozillaplug: Version: 1.0
            Silverlight: Version: 5.1.20913.0 - SDK 10.6 Support
            DirectorShockwave: Version: 12.0.5r146 - SDK 10.6 Support
            iPhotoPhotocast: Version: 7.0 - SDK 10.7
Safari Extensions:
            Amazon Shopping Assistant: Version: 1.1
            Searchme: Version: 1.3
            Ebay Shopping Assistant: Version: 1.1
Audio Plug-ins:
            BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9
            AirPlay: Version: 2.0 - SDK 10.9
            AppleAVBAudio: Version: 203.2 - SDK 10.9
            iSightAudio: Version: 7.7.3 - SDK 10.9
iTunes Plug-ins:
            Quartz Composer Visualizer: Version: 1.4 - SDK 10.9
User iTunes Plug-ins:
            iLike: Version: 1.0 Support
            PPC Bundle: Version: (null) Support
            iLike Bundle: Version: (null) Support
            Tiger Bundle: Version: (null) Support
            TuneUp Visualizer: Version: (null) Support
3rd Party Preference Panes:
            None
Time Machine:
            Skip System Files: NO
            Mobile backups: OFF
            Auto backup: NO - Auto backup turned off
            Volumes being backed up:
                        Macintosh HD: Disk size: 464.96 GB Disk used: 260.79 GB
            Destinations:
                        EVE TIME MACHINE & PHOTOS [Local] (Last used)
                        Total size: 2
                        Total number of backups: 22
                        Oldest backup: 2013-11-19 10:49:38 +0000
                        Last backup: 2014-05-07 09:35:48 +0000
                        Size of backup disk: Excellent
                                    Backup size 2 > (Disk size 464.96 GB X 3)
                        copy Time Machine + photos (22 Nov 2013) [Local]
                        Total size: 931.36 GB
                        Total number of backups: 5
                        Oldest backup: 2013-11-23 04:29:31 +0000
                        Last backup: 2014-03-26 20:03:02 +0000
                        Size of backup disk: Adequate
                                    Backup size 931.36 GB > (Disk used 260.79 GB X 3)
            Time Machine details may not be accurate.
            All volumes being backed up may not be listed.
Top Processes by CPU:
                 5%            firefox
                 3%            WindowServer
                 0%            Microsoft Word
                 0%            launchservicesd
                 0%            fontd
Top Processes by Memory:
            606 MB            com.apple.IconServicesAgent
            401 MB            firefox
            238 MB            Finder
            221 MB            mds_stores
            123 MB            Microsoft Word
Virtual Memory Information:
            3.68 GB            Free RAM
            2.57 GB            Active RAM
            492 MB            Inactive RAM
            1.26 GB            Wired RAM
            2.42 GB            Page-ins
            0 B            Page-outs

Hey thank you! I tried to send you a first answer but Firefox blocked... Again thank you for your advice and the detailed process to follow, hope it can help! - Also sorry for my English which is not my primary language.
Also don't know how to edit the Anonymous UUID... is it in the apple discussion account?
Here is what i found in Console > Diagnostic and usage information > System diagnostic report:
there were 4 lines as titles, and after Firefox crash there are 5 now.
I will send you the content for each of them, but in a new message each time in case it freezes again.
1st line starts with diskarbitrationd, ends with .shutdownStall
content:
Date/Time:
2014-05-12 18:05:15 -0700
OS Version:
10.9.2 (Build 13C1021)
Architecture:
x86_64
Report Version: 18
Command:
No Target
Path:
No Target
Version:
Parent:
UNKNOWN PROCESS [0]
PID:
0
Event:
shutdown stall
Duration:
12.05s (sampling started after 2 seconds)
Steps:
101 (100ms sampling interval)
Hardware model: MacBookPro8,2
Active cpus:
8
Fan speed:
4033 rpm (-334)
Free pages:
1153467 pages (-455)
Pageins:
5 pages
Pageouts:
0 pages
Swapins:
0 pages
Swapouts:
0 pages
Process:
diskarbitrationd [21]
Path:
/usr/libexec/diskarbitrationd
Architecture:
x86_64
Parent:
launchd [1]
UID:
0
Sudden Term:
Dirty
Task size:
577 pages (-6)
Importance:
Adaptive, Donating
Timers:
Coalesced
Thread 0x13d
DispatchQueue 1
priority 31
101 start + 1 (libdyld.dylib) [0x7fff8c4db5fd]
101 ??? (diskarbitrationd + 28877) [0x10e56a0cd]
101 CFRunLoopRun + 97 (CoreFoundation) [0x7fff8c3da811]
101 CFRunLoopRunSpecific + 309 (CoreFoundation) [0x7fff8c3250b5]
101 __CFRunLoopRun + 1161 (CoreFoundation) [0x7fff8c325779]
101 __CFRunLoopServiceMachPort + 181 (CoreFoundation) [0x7fff8c326155]
101 mach_msg_trap + 10 (libsystem_kernel.dylib) [0x7fff8f270a1a]
*101 ??? (mach_kernel + 92160) [0xffffff8000216800]
Thread 0x146
DispatchQueue 2
priority 33
101 _dispatch_mgr_thread + 52 (libdispatch.dylib) [0x7fff8ab9c152]
101 kevent64 + 10 (libsystem_kernel.dylib) [0x7fff8f275662]
*101 ??? (mach_kernel + 3949760) [0xffffff80005c44c0]
Thread 0x15ac
priority 31
*101 wq_unsuspend_continue + 0 (pthread) [0xffffff7f80b747c4]
Thread 0x14e2
priority 29
80 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff93750fb9]
80 __workq_kernreturn + 10 (libsystem_kernel.dylib) [0x7fff8f274e6a]
*80 wq_unpark_continue + 0 (pthread) [0xffffff7f80b746ae]
Thread 0x1569
priority 0
79 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff93750fb9]
79 __workq_kernreturn + 10 (libsystem_kernel.dylib) [0x7fff8f274e6a]
*79 wq_unpark_continue + 0 (pthread) [0xffffff7f80b746ae]
Thread 0x15a6
priority 31
71 start_wqthread + 13 (libsystem_pthread.dylib) [0x7fff93750fb9]
71 __workq_kernreturn + 10 (libsystem_kernel.dylib) [0x7fff8f274e6a]
*71 wq_unpark_continue + 0 (pthread) [0xffffff7f80b746ae]
Binary Images:
0x10e563000 -
0x10e578fff diskarbitrationd (266) <94F10D52-A866-34ED-B278-873B4B2E0C7E> /usr/libexec/diskarbitrationd
0x7fff8ab99000 -
0x7fff8abb3fff libdispatch.dylib (339.90.1) <F3CBFE1B-FCE8-3F33-A53D-9092AB382DBB> /usr/lib/system/libdispatch.dylib
0x7fff8c2b5000 -
0x7fff8c49afff com.apple.CoreFoundation 6.9 (855.16) <617B8A7B-FAB2-3271-A09B-C542E351C532> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
0x7fff8c4d8000 -
0x7fff8c4dbff7 libdyld.dylib (239.4) <CF03004F-58E4-3BB6-B3FD-BE4E05F128A0> /usr/lib/system/libdyld.dylib
0x7fff8f25f000 -
0x7fff8f27bff7 libsystem_kernel.dylib (2422.90.20) <20E00C54-9222-359F-BD98-CB79ABED769A> /usr/lib/system/libsystem_kernel.dylib
0x7fff9374b000 -
0x7fff93752ff7 libsystem_pthread.dylib (53.1.4) <AB498556-B555-310E-9041-F67EC9E00E2C> /usr/lib/system/libsystem_pthread.dylib
*0xffffff7f80b71000 - 0xffffff7f80b78fff com.apple.kec.pthread 1.0 (1) <619F6A5D-FFA2-3B59-9993-958FD7154B83> /System/Library/Extensions/pthread.kext/Contents/MacOS/pthread
*0xffffff8000200000 - 0xffffff8000200000 mach_kernel <9FEA8EDC-B629-3ED2-A1A3-6521A1885953> /mach_kernel
Process:
fsck_hfs [267]
Path:
/System/Library/Filesystems/hfs.fs/Contents/Resources/fsck_hfs
Architecture:
x86_64
Parent:
diskarbitrationd [21]
Responsible:
diskarbitrationd [21]
UID:
0
Task size:
206770 pages
CPU Time:
10.043s
Importance:
Adaptive, Donating
Thread 0x968
DispatchQueue 1
priority 31
cpu time 10.043s
101 start + 1 (libdyld.dylib) [0x7fff8c4db5fd]
101 ??? (fsck_hfs + 7233) [0x106fe7c41]
101 ??? (fsck_hfs + 76504) [0x106ff8ad8]
101 ??? (fsck_hfs + 79339) [0x106ff95eb]
101 ??? (fsck_hfs + 119757) [0x1070033cd]
42 ??? (fsck_hfs + 135082) [0x107006faa]
42 ??? (fsck_hfs + 73083) [0x106ff7d7b]
38 ??? (fsck_hfs + 33605) [0x106fee345]
24 ??? (fsck_hfs + 43420) [0x106ff099c]
23 ??? (fsck_hfs + 40781) [0x106feff4d]
6   ??? (fsck_hfs + 28484) [0x106fecf44]
*6   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*6   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*6   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*6   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*6   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
3   ??? (fsck_hfs + 29225) [0x106fed229]
*3   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*3   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*3   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*3   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*3   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
2   ??? (fsck_hfs + 29241) [0x106fed239]
*2   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*2   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*2   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*2   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*2   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
2   ??? (fsck_hfs + 28343) [0x106feceb7]
*2   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*2   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*2   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*2   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*2   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28442) [0x106fecf1a]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28427) [0x106fecf0b]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28390) [0x106fecee6]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 29203) [0x106fed213]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28331) [0x106feceab]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28938) [0x106fed10a]
1   ??? (fsck_hfs + 26336) [0x106fec6e0]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28490) [0x106fecf4a]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 30064) [0x106fed570]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28519) [0x106fecf67]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28406) [0x106fecef6]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 40680) [0x106fefee8]
1   ??? (fsck_hfs + 32482) [0x106fedee2]
1   ??? (fsck_hfs + 17431) [0x106fea417]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
14 ??? (fsck_hfs + 43610) [0x106ff0a5a]
14 ??? (fsck_hfs + 41086) [0x106ff007e]
2   ??? (fsck_hfs + 28484) [0x106fecf44]
*2   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*2   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*2   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*2   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*2   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28373) [0x106feced5]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 29225) [0x106fed229]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28492) [0x106fecf4c]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 29199) [0x106fed20f]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28511) [0x106fecf5f]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28505) [0x106fecf59]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28401) [0x106fecef1]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28477) [0x106fecf3d]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28390) [0x106fecee6]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 30356) [0x106fed694]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28496) [0x106fecf50]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28343) [0x106feceb7]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
4   ??? (fsck_hfs + 33871) [0x106fee44f]
4   ??? (fsck_hfs + 41086) [0x106ff007e]
1   ??? (fsck_hfs + 28652) [0x106fecfec]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28673) [0x106fed001]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 29179) [0x106fed1fb]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28664) [0x106fecff8]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
39 ??? (fsck_hfs + 134138) [0x107006bfa]
39 ??? (fsck_hfs + 73083) [0x106ff7d7b]
36 ??? (fsck_hfs + 33605) [0x106fee345]
22 ??? (fsck_hfs + 43420) [0x106ff099c]
20 ??? (fsck_hfs + 40781) [0x106feff4d]
8   ??? (fsck_hfs + 28484) [0x106fecf44]
*8   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*8   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*8   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*8   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*8   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
2   ??? (fsck_hfs + 28492) [0x106fecf4c]
*2   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*2   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*2   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*2   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*2   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 29194) [0x106fed20a]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 29225) [0x106fed229]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 26738) [0x106fec872]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28433) [0x106fecf11]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28442) [0x106fecf1a]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28427) [0x106fecf0b]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28490) [0x106fecf4a]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28660) [0x106fecff4]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28496) [0x106fecf50]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28477) [0x106fecf3d]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
2   ??? (fsck_hfs + 40680) [0x106fefee8]
2   ??? (fsck_hfs + 32482) [0x106fedee2]
1   ??? (fsck_hfs + 17850) [0x106fea5ba]
1   _platform_memmove$VARIANT$Nehalem + 258 (libsystem_platform.dylib) [0x7fff8ae280e2]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 17595) [0x106fea4bb]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
13 ??? (fsck_hfs + 43610) [0x106ff0a5a]
13 ??? (fsck_hfs + 41086) [0x106ff007e]
2   ??? (fsck_hfs + 30447) [0x106fed6ef]
*2   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*2   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*2   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*2   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*2   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
2   ??? (fsck_hfs + 28484) [0x106fecf44]
*2   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*2   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*2   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*2   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*2   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
2   ??? (fsck_hfs + 28477) [0x106fecf3d]
*2   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*2   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*2   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*2   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*2   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 29225) [0x106fed229]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28511) [0x106fecf5f]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28406) [0x106fecef6]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 30435) [0x106fed6e3]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28490) [0x106fecf4a]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 29255) [0x106fed247]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 29237) [0x106fed235]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 43408) [0x106ff0990]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
2   ??? (fsck_hfs + 33871) [0x106fee44f]
2   ??? (fsck_hfs + 41086) [0x106ff007e]
1   ??? (fsck_hfs + 28860) [0x106fed0bc]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]
*1   ??? (mach_kernel + 900976) [0xffffff80002dbf70]
1   ??? (fsck_hfs + 28331) [0x106feceab]
*1   ??? (mach_kernel + 996585) [0xffffff80002f34e9]
*1   ??? (mach_kernel + 898031) [0xffffff80002db3ef]
*1   ??? (mach_kernel + 925350) [0xffffff80002e1ea6]
*1   ??? (mach_kernel + 928680) [0xffffff80002e2ba8]

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Old iMac won't start up and stuck in grey screen with spinning wheel

Hi, I have a very old imac which I purchased back in 2005, and has been working fine. I have left it in storage about 1 and 1/2 years ago.
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Do you have the Install Disc to try to boot from?
Might be time to replace the PRAM Battery, 4 years is close to their lifespan, far less if ever without AC power, & can cause strange startup problems...
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Hi Eug07349,
Thanks for visiting Apple Support Communities.
It sounds like you may be experiencing a software issue. I'd suggest trying the first two steps in this article (Disconnect, test peripheral devices and network cables, Perform a Safe Boot):
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Hello jason(?)
It's a LaCie external mobiel hdd, formatted as exFAT. without adapter. take power directly from usb port.
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My macbook pro is stuck on grey screen with apple symbol in center with the progress circle under it continusly spinning. After I had turned it on. Prior to turning it on I had to force close and shut down a few hours prior. Please Help I have tried everything I know to do

Unfortunately this means that there is a problem in the boot sector of your hard drive. It might be indicative of a fundamental corruption in the coding that allows your computer to boot your operating system from your hard drive. I had this problem twice and it resulted in me having to get a new hard drive and restore my data.
In other words, your computer can't talk to your operating system so you can't access your data.
Here is my advice: DON'T CALL APPLE TECH SUPPORT though they are kind and usually helpful it will take you an hour just to explain the situation and they will only tell you to do what I'm gonna say here.
First: Shut down your computer completely
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Three: Boot up while holding down the option key. Select recovery drive. Select your default language. Select disk utility, click on Macintosh HD, and select "verify and repair volume." Likely the verification will produce some line like "unused node not erased." Or something like that. If anything using the words "node structure" comes up, you need a new hard drive.
If after verification and repairs you still can't boot I sincerely hope you have apple care because you will need a new hard drive. Set up an appointment to come in to the apple store, they will tell you to go and get data recovery, just ask them to give you the old hard drive. Unless you have an up to date backup in which case you can just restore from that. If you're lucky the only issue is with the boot sector which means that if you ask them to give you the old hard drive, you can buy an enclosure and you have effectively been given a free external hard drive. It still works to store data just not to load an operating system.
If you have a back up drive bring it to the apple store and they'll do the whole thing right there, it should take around an hour and a half but may take longer.
Hope this helps, it's annoying but it's your safest bet.
All the best.

Need Help For iMac G5 Stuck On Grey Screen Or Apple Logo No Spinning Gear!

Hello everyone i'm new here and i'm new for using iMac for some reason i was trying to clean or to fresh installation the iMac that my brother gave it to me that he bought it into the flea market without the original disk on it! when i erase the Macintosh HD and some of the partition o iMac then reboot it now the iMac stuck on grey screen or apple logo no spinning wheel shown. and i also try to search and try all the tips of all mac user's like all the command key's and follow the instruction of them but still nothing happen..
Holding CMD & R just to go disk utilities nothing shown up only apple logo and the noisy fan.
Holding alt and it go to blue screen and show my mouse Pointer Refresh Logo, Hard drive Icon, Arrow Sign.
i can click Arrow Sign and it go Apple Logo and within 2-3 seconds and it change to Power Sign Logo,
i can click Refresh Logo but nothing happen .
i can't click the Hard Drive icon.
CMD, Option, P & R to Reset i also try and it's the same nothing change.
CMD, Option, ESC no action shown.
Is there anyway to fix this issue or problem please and thank you for help.
Hoping to get result for all of you guys P.S
iMac G5
v10.5.8
Leopard

You need to have the install DVD that was issued with the iMac
You can call Apple at 1-800-275-2273

I have snow leopard installed as an OS. When trying to reboot a MacBook Pro I am getting stuck on grey screen with apple logo and rotating symbol. What can I do?

I have snow leopard installed as an OS. When trying to reboot a MacBook Pro I am getting stuck on grey screen with apple logo and rotating symbol. What can I do?

Maybe this might help.
http://support.apple.com/kb/TS2570

Mac book air stuck on grey screen with apple logo and spinning wheel

I had a lot of tabs open and several applications as well. things really slowed up when I added El media player to the mix. finally computer froze completely and now can't get it to restart (stuck on grey screen) tried SMR plus PRAM procedures without success.

Hmm... try doing this:
1) Force your Mac to shut down by pressing and holding the power button for about 5 sec.
2) Start in Safe Mode. Press the power button to turn it on, and before you hear the Startup "Dummmmm" chime, hold down the Shift key. For a few sec, you won't see the Apple logo. Keep pressing the Shift key until you see it. If you press it after the Apple logo appears, start from Step 1 again.
3) This time, your Mac should take longer to boot. (Like a minute or 2 longer as it is going thru the necessary files to boot from, and not just everything like in Normal Startup mode; which caused it to hang)
4) Does your Mac boot sucessfully to the Login Screen or Desktop? The login Screen should show SAFE MODE in red at the top. The Desktop should have Sound disabled and seems a lot slower. If you see either of these, backup ALL your files (if you have not already done so) on to an External HDD. Create a new User Account in System Preferences>Accounts with about the same info as your current account (The name will have to be different though, if your previous account was John, this time, add your last name as in John Appleseed.) Make sure it is an Admin account. Then, login into the new account and delete your previous account. Copy all your files over to your new account and restart your Mac correctly by going to Apple Menu>Restart.
5) This time, don't press anything and let it boot normally. Does your Mac boot correctly? I hope that helps you a little. Get back to me if it does not work!

Powermac G5 stuck on grey screen start up and fans running wild

Hi All
I also have the recurring problem all of a sudden - yesterday all seems well, today am stuck on grey screen and fans getting stronger by the minute. NOTHING works - have been through all sorts of forums and the most I got was to try disk utility - which says all is well - replaced the battery - tried just about anything short of pouring some acid on the **** thing, won't boot from original install CD either - I really need this machine as I earn my living with it and cant afford a new one and why as it was working just perfect - now this mess. In a way don't know why the excellerating fans are not built to simply pick up speed and then eat into the PC board and CPU - at lest this way we know for sure there is nothing we can do.
Does no one here know why the mac is doing this - not even the mac fundies? Unbelievable. I live in Namibia and Apple Mac support here is similar to that on this website - might as well write this on a wall - that is why I am really frustrated... **** Mac

Follow these steps in order:
http://support.apple.com/kb/TS2570
The G5 is also subject to solder failure around the RAM slots and memory controller.
It is a fatal condition, but one that can sometimes be temporarily sidestepped by heating the logic board between the RAM slots with a hair dryer.
Heat the board until very warm (hot) then start.
If your machine starts after heating, then you better just leave the machine on all the time.
You never know when the trick won't work......

TS2570 My Mac is stuck on grey screen what's wrong with it and am I going to lose everything

My Mac is stuck on grey screen what's wrong with it and am I going to lose everything

Hopefully you have a backup, but...
Could be many things, we should start with this...
"Try Disk Utility
1. Insert the Mac OS X Install disc, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu at top of the screen. (In Mac OS X 10.4 or later, you must select your language first.)
*Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
3. Click the First Aid tab.
4. Select your Mac OS X volume.
5. Click Repair Disk, (not Repair Permissions). Disk Utility checks and repairs the disk."
http://docs.info.apple.com/article.html?artnum=106214
Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)
If perchance you can't find your install Disc, at least try it from the Safe Boot part onward.

Start up screen stuck on grey screen with apple logo and spinning gear

Start up screen is stuck on grey screen with apple logo and spinning gear. What should I do?

See this thread with dominic23’s suggestions: https://discussions.apple.com/thread/5783326?tstart=0

Macbook air Lion stuck at grey screen and spinning wheel

HI
I have a Macbook air with Lion installed. I pressed the On button, but it gets stuck at grey screen, apple logo and spining wheel. I then managed to get it to startup in Safe Mode.
How can I find out what the problem was?
Please could you let me know if there are some simple steps to fix this?
Thank you in advance.

Please carefully read Gray screen appears during startup, Apple will tell you how to trouble shoot the issue. I suspect your HD has crashed, not a big deal if you have been backing up. However if you haven't then you're probably about to learn a lesson on why backup is critical.

Downloaded OSX Mountain Lion on MacBook now stuck on grey screen with spinning wheel HELP?!?!

Downloaded OSX Mountain Lion on MacBook now stuck on grey screen with spinning wheel. What can I do, will I loose everything on my laptop?

ashg23 wrote:
Thank you, I have restarted but it is still stuck at the grey page with the spinning wheel? Any idea?
Have you started up holding down Command + R and attempted to install again?
Pete

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