Why does My Mac Book Pro Keeps Shutting Off During Boot Up.
I recently installed office 2008 shut laptop off to take to work then i went to reboot at work and it goes to white apple screen then shuts right off,i went into disk utility and Invalid Key Length then it says the volume apps could not be verified completely. Error this disk needs to be repaired. This is like third time happen .i dont understand and no i didnt do a backup cause its a mac,never had this problem before until upgraded to lion,please help i dont wanna have to reinstall i finally got a my music from itunes,
I am afraid that you have no choice other than Repairing Disk using Recovery HD.
You can download music purchased from iTunes again for free, in case it is lost.
Best.
Similar Messages
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Why does my Mac Book pro keep restarting
why does my Mac Book pro keep restarting and how can it be fixed
It would be nice if you could include a kernel panic log to verify that your problem is...
Mid-2010 15" MacBook Pros - the bad NVIDIA GPU
If you're having frequent kernel panics with your 15" mid-2010, or intermittent screen problems, the problem is, more than likely, the faulty NVIDIA GPU found in a number of those machines.
Here's just a sample of a kernel panic log that points to the faulty NVIDIA card:
Kernel Extensions in backtrace (with dependencies):
com.apple.GeForce(6.4.0)@0x82ac4000->0x82b7afff
dependency: com.apple.NVDAResman(6.4.0)@0x834a0000
dependency: com.apple.iokit.IONDRVSupport(2.2.1)@0x82fd3000
dependency: com.apple.iokit.IOPCIFamily(2.6.5)@0x7a802000
dependency: com.apple.iokit.IOGraphicsFamily(2.2.1)@0x8301b000
com.apple.nvidia.nv50hal(6.4.0)@0x83c05000->0x84019fff
dependency: com.apple.NVDAResman(6.4.0)@0x834a0000
com.apple.NVDAResman(6.4.0)@0x834a0000->0x8378dfff
dependency: com.apple.iokit.IOPCIFamily(2.6.5)@0x7a802000
dependency: com.apple.iokit.IONDRVSupport(2.2.1)@0x82fd3000
dependency: com.apple.iokit.IOGraphicsFamily(2.2.1)@0x8301b000
Here's the "official" Apple take on the issue - but the very real kernel panics need not be preceded by 'Intermittent black screen or loss of video'... in fact, you might not experience any video problems at all. Although video problems can certainly be a portent of things to come…
So what can you do? Print out a copy of your kernel panic and a copy of the Knowledge Base article and take them, along with your machine, to your local Apple Store or an Apple Authorized Service Provider. The unfortunate thing is that many people have passed the “three years from date of purchase” now and Apple is not honoring the free logic board replacement for many users. Some dealers seem to be making some exceptions for those past the three year mark, but don’t count on it…
Good luck,
Clinton -
WHY DOES MY MAC BOOK PRO SHUT OFF ON ME? SO FAR THE INFO I GOT 4 IT IS A MAC OS X VERSION 10.7.3 THE PROCESSOR IS 2.4 GHZ INTEL CORE 2 DUO MEMORY IS 2 GB 667MHZ DDR2 SDRAM I DON'T KNOW HOW OLD IT IS BECAUSE I BOUGHT IT USED SORRY I HOPE THIS HELPS THANK YOU
Sounds to me like you may have gotten a machine with hardware issues, but it's hard to say. It will shut down if it gets too hot, but that's not a normal occurrence. I have never seen a MacBook Pro shut down due to heat, even after lengthy 3D gaming sessions where the fans are running fast and the bottom of the machine is unpleasant to touch.
First thing I would try to do is reset the SMC. If that doesn't help, erase the hard drive and reinstall the system from scratch, which you should always do with a used machine anyway.
If a fresh system doesn't help, you'll need to get it checked out by Apple.
Edit: Oh, and sig is absolutely right... please don't post in all caps! It's very irritating. -
WHY DOES MY MAC BOOK PRO SHUT OFF ON ME?
WHY DOES MY MAC BOOK PRO SHUT OFF ON ME?
DAKINGGOD wrote:
WHY DOES MY MAC BOOK PRO SHUT OFF ON ME?
Not much to work with here...
How about more info so a diagnosis and help can be formulated? Mac model (size), RAM, OS version, age, battery status? What are you doing when it happens? How often? And if you want to be really abundant, pertinent logfiles? -
Why does my Mac book pro Mid 2010 Not air Play?
Why does my Mac book Pro, Mid 2010 Model Not air play with the new Mountain Lion?
davenug,
given how much we currently know about your MacBook Pro, why do you think that we would know the reason? Please help us to help you by providing relevant information about your MacBook Pro — which model is it? Which version of OS X is installed on it? Is its battery fully charged? Is its AC charger working properly? &c. -
Why does my mac book pro not show in 1080p on my flat screen
why does my mac book pro not show in 1080p on my flat screen. My mac bookpro always showed in 1080p on a Sanyo Plasma screen. Now when I connect mac book pro I get a blank screen. It will display in 720 but not 1080p. Also will show in 1080i but pictures flicker.
davenug,
given how much we currently know about your MacBook Pro, why do you think that we would know the reason? Please help us to help you by providing relevant information about your MacBook Pro — which model is it? Which version of OS X is installed on it? Is its battery fully charged? Is its AC charger working properly? &c. -
Why does my mac book pro freeze when using photo shop
Why does my mac book pro freeze a lot when using photo shop?
What version of Photoshop are you using?
Clinton -
When I either leave my mac book pro open, but idle long enough for it to go to sleep or close the top and put it to sleep, the only way to light up the screen again is to diconnect the mag. connect power cord. Any ideas why and/or how to correct this problem?
So this is what I got when I took my computer into the apple store to have it diagnosed.
After the apple technician performced several tests, the only thing that fixed the issue was an SMC reset. Based on this he figures it is probably a software or firmware issue that is going on. He is a little concerend how ever that the fans of the comupter don't reach maximal rpm when the computer is displaying the issue. So he recorded the problem, and told me to just perform the SMC reset as needed for the next couple months and wait for a new update from apple. If the issue persists I am to go back to the apple store and they will take the appropriate steps.
He said an SMC reset doesn't hurt the computer in any way, so its safe to do. I am gonna contact blizzard and let them know about the issue as well because if it is software, it could be their game (Diablo 3) that is causing the issue as well. If I hear of anything new i will let you know. So get on the blizzard form and let them know of the issue to fix the problem faster.
Thanks for your help,
Tetrault -
Why does my mac book Pro pick up wifi but my new ipad wont in the exact same position in my house?
I sit in my lounge with my mac book pro and it picks up my home wifi perfectly yet when i sit with my ipad, sometimes it works and picks it it but then at times it looses the connection and I cant find the hub?? why is this and is there anything I can do to stop it from happening?
Look at iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
Additional things to try.
Try this first. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
Another thing to try - Go into your router security settings and change from WEP to WPA with AES.
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
If none of the above suggestions work, look at this link.
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130
Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
Cheers, Tom -
Why does my Mac Book Pro get so hot?
My Mac Book Pro gets hot whenever i use it for awhile and i am wondering what could be causing the "over heating"
I just bought my Mac about a month ago, it is the 13 inch with the intel core i7 processor.Hot is a relative term. Go on the Internet and download iStat pro, a widget that monitors the internal temperatures and fan speeds of your MBP. When you get accurate numerical data then you will be able to determine if there actually is a problem.
Yes the MBPs do get warm which is good because that is dissipating the internal heat being generated by the internal components. The heat to a large degree is a function of the applications you are using, such as video games will require more CPU resources than emails, thus generating additional heat.
Bear in mind that the MBP has internal heat sensors that will shut the unit down if it starts to over heat thus preventing the MBP committing Hari Kari.
Ciao. -
When I begin to play Diablo 3 with my fairly new 15" mac book pro with retina display, every now and then my computer will be really laggy when playing it (frame rate of under 5). Normally its performance is really fast with a frame rate of about 40-60 frames per second depending on the resolution used. When this happens I have performed a SMC reset and it fixed the problem. However, every few days it will act up again and I will have to do an SMC reset again. It has now happened again for the third time and I am affraid to continue to perform an SMC reset, is this bad for my computer? Should I take it in and have them trouble shoot it? Any help would be greatly appreciated to figure out what is wrong. Thanks.
So this is what I got when I took my computer into the apple store to have it diagnosed.
After the apple technician performced several tests, the only thing that fixed the issue was an SMC reset. Based on this he figures it is probably a software or firmware issue that is going on. He is a little concerend how ever that the fans of the comupter don't reach maximal rpm when the computer is displaying the issue. So he recorded the problem, and told me to just perform the SMC reset as needed for the next couple months and wait for a new update from apple. If the issue persists I am to go back to the apple store and they will take the appropriate steps.
He said an SMC reset doesn't hurt the computer in any way, so its safe to do. I am gonna contact blizzard and let them know about the issue as well because if it is software, it could be their game (Diablo 3) that is causing the issue as well. If I hear of anything new i will let you know. So get on the blizzard form and let them know of the issue to fix the problem faster.
Thanks for your help,
Tetrault -
When turning on my Mac Book pro before it get to the log in screen it has a blue screen for a couple of second the goes to the login sreen. It seams to take some time to complete the login to my computer.
can anybody give me some help with this problem.
Thank youThe cable connections have (so far) solved this problem for my situation. Even though the monitor's DVI cable was firmly connected to the mini Display port connector, when I touched it the attached monitor would go 'blue' or lose its connection entirely. After disconnecting and reconnecting this junction the monitors would still take a hit on touching the connection. I also checked the connection of the mini Display port connection to the graphics board and could not push it in any further. However, after a second go-round I unplugged this connection to the board and reconnected it. I am certain it was fully inserted the first time. But, connection contacts can oxidize over time and sometimes it may just need to be disconnected and reconnected to 're-wipe' the connections. This effectively cleans them at the point of contact. So in my case I'm thinking it was the connection age that was an issue more than a 'loose' connection. Either way, I haven't had this issue for the past two weeks.
-
My mac book pro suddenly shuts off .
i have mac book pro . it suddenly shuts off and then restarts on its own... then it gives following report.
Anonymous UUID: 5F11BBED-B359-97ED-A6E6-DABCA5B8CD30
Mon Sep 29 12:06:53 2014
panic(cpu 2 caller 0xffffff80026dc43e): Kernel trap at 0xffffff7f831d987c, type 14=page fault, registers:
CR0: 0x000000008001003b, CR2: 0x000038250c8b4885, CR3: 0x0000000004ac4000, CR4: 0x00000000000606e0
RAX: 0x000038250c8b4865, RBX: 0xffffff8019e1d900, RCX: 0x0000000000000000, RDX: 0x7fffffffffffffff
RSP: 0xffffff809c04bc60, RBP: 0xffffff809c04bca0, RSI: 0x0000000000000050, RDI: 0xffffff80026f3a10
R8: 0x000000000000007f, R9: 0x0000000000000000, R10: 0x000000000000007f, R11: 0x0000000000000000
R12: 0xffffff80026f3a10, R13: 0x0000000000000033, R14: 0x0000000000000000, R15: 0x000000000000000a
RFL: 0x0000000000010282, RIP: 0xffffff7f831d987c, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0x000038250c8b4885, Error code: 0x0000000000000000, Fault CPU: 0x2
Backtrace (CPU 2), Frame : Return Address
0xffffff809c04b8f0 : 0xffffff8002622f79
0xffffff809c04b970 : 0xffffff80026dc43e
0xffffff809c04bb40 : 0xffffff80026f3976
0xffffff809c04bb60 : 0xffffff7f831d987c
0xffffff809c04bca0 : 0xffffff7f831d70fe
0xffffff809c04bd00 : 0xffffff7f8445b3a5
0xffffff809c04bd70 : 0xffffff7f831de1b5
0xffffff809c04bdf0 : 0xffffff7f831e11d9
0xffffff809c04be70 : 0xffffff7f831e0660
0xffffff809c04bec0 : 0xffffff7f831dfbc5
0xffffff809c04bf00 : 0xffffff7f831ddf08
0xffffff809c04bf20 : 0xffffff800264a20a
0xffffff809c04bfb0 : 0xffffff80026d7607
Kernel Extensions in backtrace:
com.apple.iokit.IOHIDFamily(2.0)[56DC13A6-5EE7-3089-9449-D5E3A8186C90]@0xffffff 7f831b4000->0xffffff7f83225fff
dependency: com.apple.driver.AppleFDEKeyStore(28.30)[2A8A5F6B-0A7C-33A0-8E5B-4C10F646EC4F]@ 0xffffff7f831a9000
com.spsys.driver.EIOKitDriver(1.0.1)[00000000-0000-0000-0000-000000000000]@0xff ffff7f8445a000->0xffffff7f8445dfff
dependency: com.apple.iokit.IOHIDFamily(2.0.0)[56DC13A6-5EE7-3089-9449-D5E3A8186C90]@0xffff ff7f831b4000
BSD process name corresponding to current thread: kernel_task
Mac OS version:
13F34
Kernel version:
Darwin Kernel Version 13.4.0: Sun Aug 17 19:50:11 PDT 2014; root:xnu-2422.115.4~1/RELEASE_X86_64
Kernel UUID: 9477416E-7BCA-3679-AF97-E1EAAD3DD5A0
Kernel slide: 0x0000000002400000
Kernel text base: 0xffffff8002600000
System model name: MacBookPro8,1 (Mac-94245B3640C91C81)
System uptime in nanoseconds: 35927508992006
last loaded kext at 34051494562376: com.apple.driver.AppleUSBTCKeyEventDriver 240.2 (addr 0xffffff7f84464000, size 12288)
last unloaded kext at 34280731335715: com.apple.driver.AppleUSBCDC 4.2.1b5 (addr 0xffffff7f8445e000, size 16384)
loaded kexts:
com.spsys.driver.EIOKitDriver 1.0.1
com.spsys.driver.ENKEDriver 1
com.apple.driver.AudioAUUC 1.60
com.apple.driver.AppleHWSensor 1.9.5d0
com.apple.driver.AGPM 100.14.34
com.apple.filesystems.autofs 3.0
com.apple.iokit.IOBluetoothSerialManager 4.2.7f3
com.apple.driver.AppleMikeyHIDDriver 124
com.apple.driver.AppleHDA 2.6.3f4
com.apple.driver.AppleMikeyDriver 2.6.3f4
com.apple.iokit.IOUserEthernet 1.0.0d1
com.apple.driver.AppleSMCLMU 2.0.4d1
com.apple.driver.ApplePolicyControl 3.6.22
com.apple.driver.AppleUpstreamUserClient 3.5.13
com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0
com.apple.driver.AppleLPC 1.7.0
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.2.7f3
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleHWAccess 1
com.apple.driver.AppleThunderboltIP 1.1.2
com.apple.driver.AppleSMCPDRC 1.0.0
com.apple.driver.AppleBacklight 170.4.11
com.apple.driver.AppleMCCSControl 1.2.5
com.apple.driver.AppleIntelHD3000Graphics 8.2.4
com.apple.driver.AppleIntelSNBGraphicsFB 8.2.4
com.apple.driver.SMCMotionSensor 3.0.4d1
com.apple.driver.AppleUSBTCButtons 240.2
com.apple.driver.AppleUSBTCKeyboard 240.2
com.apple.driver.AppleIRController 325.7
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeLZVN 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 35
com.apple.iokit.SCSITaskUserClient 3.6.7
com.apple.driver.XsanFilter 404
com.apple.iokit.IOAHCIBlockStorage 2.6.0
com.apple.driver.AppleUSBHub 683.4.0
com.apple.driver.AirPort.Brcm4331 700.20.22
com.apple.iokit.AppleBCM5701Ethernet 3.8.1b2
com.apple.driver.AppleSDXC 1.5.2
com.apple.driver.AppleAHCIPort 3.0.5
com.apple.driver.AppleFWOHCI 5.0.2
com.apple.driver.AppleUSBEHCI 660.4.0
com.apple.driver.AppleSmartBatteryManager 161.0.0
com.apple.driver.AppleACPIButtons 2.0
com.apple.driver.AppleRTC 2.0
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleSMBIOS 2.1
com.apple.driver.AppleACPIEC 2.0
com.apple.driver.AppleAPIC 1.7
com.apple.driver.AppleIntelCPUPowerManagementClient 217.92.1
com.apple.nke.applicationfirewall 153
com.apple.security.quarantine 3
com.apple.driver.AppleIntelCPUPowerManagement 217.92.1
com.apple.AppleGraphicsDeviceControl 3.6.22
com.apple.kext.triggers 1.0
com.apple.iokit.IOSerialFamily 10.0.7
com.apple.driver.DspFuncLib 2.6.3f4
com.apple.vecLib.kext 1.0.0
com.apple.iokit.IOAudioFamily 1.9.7fc2
com.apple.kext.OSvKernDSPLib 1.14
com.apple.iokit.IOSurface 91.1
com.apple.driver.AppleHDAController 2.6.3f4
com.apple.iokit.IOHDAFamily 2.6.3f4
com.apple.driver.IOPlatformPluginLegacy 1.0.0
com.apple.driver.AppleSMBusPCI 1.0.12d1
com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.2.7f3
com.apple.iokit.IOFireWireIP 2.2.6
com.apple.iokit.IOBluetoothFamily 4.2.7f3
com.apple.driver.IOPlatformPluginFamily 5.7.1d6
com.apple.driver.AppleGraphicsControl 3.6.22
com.apple.driver.AppleBacklightExpert 1.0.4
com.apple.driver.AppleSMBusController 1.0.12d1
com.apple.iokit.IONDRVSupport 2.4.1
com.apple.iokit.IOGraphicsFamily 2.4.1
com.apple.driver.AppleSMC 3.1.8
com.apple.driver.AppleThunderboltDPInAdapter 3.1.7
com.apple.driver.AppleThunderboltDPAdapterFamily 3.1.7
com.apple.driver.AppleThunderboltPCIDownAdapter 1.4.5
com.apple.driver.AppleUSBMultitouch 240.10
com.apple.iokit.IOUSBHIDDriver 660.4.0
com.apple.driver.AppleUSBMergeNub 650.4.0
com.apple.driver.AppleUSBComposite 656.4.1
com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.6.7
com.apple.iokit.IOBDStorageFamily 1.7
com.apple.iokit.IODVDStorageFamily 1.7.1
com.apple.iokit.IOCDStorageFamily 1.7.1
com.apple.driver.AppleThunderboltNHI 2.0.1
com.apple.iokit.IOThunderboltFamily 3.3.1
com.apple.iokit.IOAHCISerialATAPI 2.6.1
com.apple.iokit.IOSCSIArchitectureModelFamily 3.6.7
com.apple.iokit.IO80211Family 640.36
com.apple.iokit.IOEthernetAVBController 1.0.3b4
com.apple.driver.mDNSOffloadUserClient 1.0.1b5
com.apple.iokit.IONetworkingFamily 3.2
com.apple.iokit.IOUSBUserClient 660.4.2
com.apple.iokit.IOAHCIFamily 2.6.5
com.apple.iokit.IOFireWireFamily 4.5.5
com.apple.iokit.IOUSBFamily 686.4.1
com.apple.driver.AppleEFINVRAM 2.0
com.apple.driver.AppleEFIRuntime 2.0
com.apple.iokit.IOHIDFamily 2.0.0
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 278.11.1
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 7
com.apple.driver.AppleKeyStore 2
com.apple.driver.DiskImages 371.1
com.apple.iokit.IOStorageFamily 1.9
com.apple.iokit.IOReportFamily 23
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleACPIPlatform 2.0
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.corecrypto 1.0
com.apple.kec.pthread 1
Model: MacBookPro8,1, BootROM MBP81.0047.B27, 2 processors, Intel Core i5, 2.3 GHz, 4 GB, SMC 1.68f99
Graphics: Intel HD Graphics 3000, Intel HD Graphics 3000, Built-In, 384 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353737334448302D4348392020
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353737334448302D4348392020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xD6), Broadcom BCM43xx 1.0 (5.106.98.100.22)
Bluetooth: Version 4.2.7f3 14616, 3 services, 23 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: TOSHIBA MK3265GSXF, 320.07 GB
Serial ATA Device: MATSHITADVD-R UJ-8A8
USB Device: Hub
USB Device: IR Receiver
USB Device: FaceTime HD Camera (Built-in)
USB Device: Hub
USB Device: Apple Internal Keyboard / Trackpad
USB Device: BRCM2070 Hub
USB Device: Bluetooth USB Host Controller
Thunderbolt Bus: MacBook Pro, Apple Inc., 22.1What you should do next depends on the circumstances. For example:
If you installed the keylogger yourself and then forgot about it, remove it according to the developer's instructions. If you want to keep it, check for an update or refer to the developer for support.
If you're under 18 years old, and the keylogger was installed by a parent or guardian, talk it over within the family.
If you're an adult, and the keylogger was installed on your personal computer without your permission, then the computer may be evidence of a crime or a civil wrong. Consider the legal implications before you do anything. Assume that everything you've done with the computer is known to the party who installed the keylogger.
If the computer was issued to you by a school or employer, then you should check with the IT staff that the keylogger is authorized. Don't use the machine for personal business. If the keylogger interferes with your work, the IT staff will have to solve the problem.
In the event that the computer was tampered with by an unknown party, and you just want to clean it up, see below.
The only way you can be sure that the computer is not compromised is to erase at least the startup volume and restore it to something like the status quo ante. The easiest approach is to recover the entire system from a backup that predates the attack. Obviously, that's only practical if you know when the attack took place, and it was recent, and you have such a backup. You will lose all changes to data, such as email, that were made after the time of the snapshot. Some of those changes can be restored from a later backup.
If you don't know when the attack happened, or if it was too long ago for a complete rollback to be feasible, then you should erase and install OS X. If you don't already have at least two complete, independent backups of all data, then you must make them first. One backup is not enough to be safe.
When you restart after the installation, you'll be prompted to go through the initial setup process for a new computer. That’s when you transfer the data from a backup in Setup Assistant.
Select only users in the Setup Assistant dialog—not Applications, Other files and folders, or Computer & Network Settings. Don't transfer the Guest account, if it was enabled.
Reinstall third-party software from original media or fresh downloads—not from a backup, which may be contaminated.
Unless you were the target of an improbably sophisticated attack, this procedure will leave you with a clean system. If you have reason to think that you were the target of a sophisticated attack, then you need expert help.
That being done, change all Internet passwords and check all financial accounts for unauthorized transactions. Do this after the system has been secured, not before. -
Why does my Mac Book Pro operating OS X version 10.7.4 startup so slowly?
My Mac Book is less than one year old and it is already bogging down considerably and operating slowly. The problem began after I inadvertently filled the hard drive to capacity. After noticing that the hard drive was full, I cleaned out half of the space. I cleaned out the downloads, trash, archived large files, and moved misc. information to an external storage device. However, since filling the hard drive my computer takes much longer to reach the login page--usually a minute or more. After logging in the computer takes another minute or longer to fully start up. I have also noticed that the overall performance is more sluggish now. Any suggestions? I look forward to your help and comments. Thanks!
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ If you’re running Mac OS X 10.7 or later, open LaunchPad. Click Utilities, then Console in the page that opens.
Step 1
Select "system.log" from the file list. Enter "BOOT_TIME" (without the quotes) in the search box. Note the timestamps of those log messages, which refer to the times when the system was booted. Now clear the search box and scroll back in the log to the last boot time when you had the problem. Post the messages logged during the time something abnormal was happening. That time might be before or after the boot.
For example, if the problem is a slow startup taking three minutes, post the messages timestamped within three minutes after the boot time, not before. If the problem is a system crash or freeze, post the messages from before the boot time, when the system was about to crash or was failing to shut down. In either case, please include the BOOT_TIME message at the beginning or the end of the log extract.
Post the log text, please, not a screenshot. If there are runs of repeated messages, post only one example of each. Don’t post many repetitions of the same message.
If the log doesn't go back far enough in time, scroll down in the Console file list to /private/var/log/system.log.0.bz2. Search that archived log, and if necessary the older ones below it, for the same information.
Important: Some private information, such as your name, may appear in the log. Edit it out by search-and-replace in a text editor before posting.
Step 2
Do the same with kernel.log.
Step 3
Still in Console, look under System Diagnostic Reports for crash or panic logs, and post the most recent one, if any. In the interest of privacy, I suggest you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header of the report, if present (it may not be.) Please don’t post shutdownStall or hang logs — they're very long and not helpful. -
Why does my mac book air just shut down when working
When using my mac book air it just shuts down. I usually need to tap several keys to restart. Any help?
If you mean that it just shuts off without any warning, then this might help:
Intel-based Macs: Resetting the System Management Controller (SMC)
Otherwise it needs to be fixed.
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