Blank screen, iMac freeze with Bip, Bip, Bip alarm!!!

My Intel Core i3 Mac Os 10.6.8 is on all day long. It happen 3 time, in the midle of the night, my screen is blank and the iMac does a bip 3 time in a roll. After a few seconds, I heard the bip, bip, bip again and again. I try to type any keys on the keyboards, but nothing is happenning. the imac is freeze. They only way to stop the bip, bip, bip is to press the power button at the back of the screen.
Mac Os is up to date.
Each time, I run repair disk permission after I restart the iMac.
Can you please explaine what is going on?
Thank you,
Jean

Try the repair method from this Apple Doc: FSCK - File System Check
To start up in single-user mode
1. Restart the computer.
2. Immediately after the startup sound, press and hold both the Command (⌘) and "s" keys on your keyboard. The computer will display a series of text messages, at which time you may release these keys.   When the computer has started up, it will display a command line prompt (#). The computer is now in single-user mode.
How to Run the File System Check from the Command Line Once you have reached a command line, follow these steps to use fsck:
1. At the prompt, type: fsck -fy (NOTE: there is a space between the k and the “-”) The fsck utility will go through five "phases" and then return information about the disk's utilization and fragmentation. Once the check is finished, if no issue is found, you should see "** The volume appears to be OK."   If fsck alters, repairs, or fixes anything, it will display the message:
****** FILE SYSTEM WAS MODIFIED *****
2 - IMPORTANT: If this message appears, repeat the "fsck -fy" command until this message no longer appears. It is not unusual for your computer to require several "passes" of fsck, because first-pass repairs may uncover additional errors. Run it until you get two consecutive times with an "OK" result.
3. When fsck reports that no problems were found, type: reboot
4. Press Return.
If you can get into Single User Mode and run the file system check it might be able to fix the damage to the system that appears to have occurred. Worth a try.
OT

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IMac freezes with beachball

Hi,
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jaap wrote:
Yep, only with Logic so far...
You might want to boot from the install DVD and run a verify check to see if there are any errors on the drive, also would be a good idea to repair permissions.
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I am new to the community and hope to find help for a big problem.
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Basic guess:
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Greetings
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U need to press the connector in real firm.
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Blank Screen or Freeze???

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Imac freezes with gray screen after mavericks update

I was updating my imac system and it is frozen in a gray screen, like it is restarting.
It's been twenty minutes and it didn't restarted.
What can i do if it don't restart anymore?
All my work data is on that imac.

Take each of these steps that you haven't already tried. Stop when the problem is resolved.
Step 1
The first step in dealing with a startup failure is to secure the data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since the last backup, you can skip this step.
There are several ways to back up a Mac that is unable to start. You need an external hard drive to hold the backup data.
     a. Start up from the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.” The article refers to starting up from a DVD, but the procedure in Recovery mode is the same. You don't need a DVD if you're running OS X 10.7 or later.
b. If Step 1a fails because of disk errors, and no other Mac is available, then you may be able to salvage some of your files by copying them in the Finder. If you already have an external drive with OS X installed, start up from it. Otherwise, if you have Internet access, follow the instructions on this page to prepare the external drive and install OS X on it. You'll use the Recovery installer, rather than downloading it from the App Store.
c. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, start the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
d. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
If the startup process stops at a blank gray screen with no Apple logo or spinning "daisy wheel," then the startup volume may be full. If you had previously seen warnings of low disk space, this is almost certainly the case. You might be able to start up in safe mode even though you can't start up normally. Otherwise, start up from an external drive, or else use the technique in Step 1b, 1c, or 1d to mount the internal drive and delete some files. According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation.
Step 3
Sometimes a startup failure can be resolved by resetting the NVRAM.
Step 4
If you use a wireless keyboard, trackpad, or mouse, replace or recharge the batteries. The battery level shown in the Bluetooth menu item may not be accurate.
Step 5
If there's a built-in optical drive, a disc may be stuck in it. Follow these instructions to eject it.
Step 6
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to start up, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can start up now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
Step 7
If you've started from an external storage device, make sure that the internal startup volume is selected in the Startup Disk pane of System Preferences.
Start up in safe mode. Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a Fusion Drive or a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to start and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know the login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you start up in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, the startup volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 11. If you ever have another problem with the drive, replace it immediately.
If you can start and log in in safe mode, empty the Trash, and then open the Finder Info window on the startup volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then restart as usual (i.e., not in safe mode.)
If the startup process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 8
Launch Disk Utility in Recovery mode (see Step 1.) Select the startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then restart as usual.
Step 9
If the startup device is an aftermarket SSD, it may need a firmware update and/or a forced "garbage collection." Instructions for doing this with a Crucial-branded SSD were posted here. Some of those instructions may apply to other brands of SSD, but you should check with the vendor's tech support.
Step 10
Reinstall the OS. If the Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Step 11
Do as in Step 9, but this time erase the startup volume in Disk Utility before installing. The system should automatically restart into the Setup Assistant. Follow the prompts to transfer the data from a Time Machine or other backup.
Step 12
This step applies only to models that have a logic-board ("PRAM") battery: all Mac Pro's and some others (not current models.) Both desktop and portable Macs used to have such a battery. The logic-board battery, if there is one, is separate from the main battery of a portable. A dead logic-board battery can cause a startup failure. Typically the failure will be preceded by loss of the settings for the startup disk and system clock. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
Step 13
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

IMac goes blank screen and freezes

Hi,
I got 24" iMac running OS X 10.5 and Win 7. Last night I was running windows playing some game when screen gone totaly black for unknown reason and iMac froze.
After that booting to OSX it caused grey screen just after a couple of seconds when the desktop has showed. Booting from recovery CD causes the same at the point when you see "Loading Apple" thingie.
I did extended apple hardware test and it showed nothing.
They only way for me to get online and post this message is getting Win7 into a safe mode or VGA mode without NVIDIA driver loaded. Btw when booting win7 normaly it goes black screen after the desktop loaded.
My warranty period has expired month ago. And last time contacting support about the hard drive issue was a real trouble. Im in Ukraine, Odessa. And this guys are in Kyiv.
So what should I do?

update:
OS X seems to be working in safe mode and, I got crash report after booting in normal
Interval Since Last Panic Report: 96 sec
Panics Since Last Report: 1
Anonymous UUID: 0DAB24C5-621E-4E50-BE00-170C9BCE23E2
Mon Mar 8 17:28:53 2010
panic(cpu 1 caller 0x00C706A4): NVRM[0]: Read Error 0x00088004: BAR0 0xe2000000 0x66417000 0x092480a2 D0 P2/4
Backtrace (CPU 1), Frame : Return Address (4 potential args on stack)
0x5b5132a8 : 0x12b4c6 (0x45f91c 0x5b5132dc 0x13355c 0x0)
0x5b5132f8 : 0xc706a4 (0xea0e80 0xea0e80 0xe656d4 0x0)
0x5b513358 : 0xf29afd (0x7b11804 0x7b1c004 0x88004 0xae7f0300)
0x5b5133a8 : 0xebaa82 (0x7b1c004 0x88004 0xae7f0300 0xebaa4f)
0x5b5133c8 : 0xf42bb5 (0x7b1c004 0x7b4bc04 0x4 0xae7f0300)
0x5b513448 : 0xf545f4 (0x7b1c004 0x7b04204 0x1 0xa)
0x5b513488 : 0xd720ce (0x7b1c004 0x6ff9004 0x0 0x0)
0x5b5134c8 : 0xd50f72 (0x6ff9004 0x2ee00 0x3 0x0)
0x5b513548 : 0xd50cfd (0x7b1c004 0x7d95a04 0x4 0x1)
0x5b513588 : 0xd39878 (0x7b1c004 0x7d95a04 0x0 0xafc8)
0x5b513678 : 0xd347a2 (0x7b1c004 0x7d93004 0x0 0x0)
0x5b5136b8 : 0xdce900 (0x7b1c004 0x7d93004 0x0 0x2)
0x5b5137d8 : 0xd531ee (0x7b1c004 0xc1d00021 0x1008000 0x20000107)
0x5b5138e8 : 0xcf6a29 (0x7b1c004 0x0 0xc1d00021 0x1008000)
0x5b513928 : 0xcf676d (0xc1d00021 0x1008000 0x20000107 0x736ac24)
0x5b513978 : 0xc7e6b9 (0xc1d00021 0x1008000 0x20000107 0x5b513c08)
Backtrace continues...
Kernel loadable modules in backtrace (with dependencies):
com.apple.nvidia.nv50hal(5.4.8)@0xeb6000->0x1109fff
dependency: com.apple.NVDAResman(5.4.8)@0xc57000
com.apple.NVDAResman(5.4.8)@0xc57000->0xeb5fff
dependency: com.apple.iokit.IONDRVSupport(1.7.3)@0xc49000
dependency: com.apple.iokit.IOPCIFamily(2.6)@0x5ce000
dependency: com.apple.iokit.IOGraphicsFamily(1.7.3)@0xc0f000
BSD process name corresponding to current thread: kernel_task
Mac OS version:
9L31a
Kernel version:
Darwin Kernel Version 9.8.0: Wed Jul 15 16:55:01 PDT 2009; root:xnu-1228.15.4~1/RELEASE_I386
System model name: iMac8,1 (Mac-F227BEC8)

My Early 2008 iMac freeze with no apparent reason

I have an Early 2008 iMac (2.66GHz Core 2 Duo with 4GB RAM).
Since installing Lion, sometimes the computer freezes without apparent reason.
The only thing I'm sure is that this is NOT the same as the Quicktime video problem – I wasn't watching a Quicktime video, nor a Flash website when it froze. Actually, today happened while I wasnt' doing anything: the computer was on, but I was at launch.
Anyway, what happens is really strange: the screen freeze, I can't do things like change volume, but the mouse still works – albeit without producing results on screen such as dock magnification etc. Also, while the computer was frozen a Time Machine backup occured as scheduled, and I was able to stream my computer's music to my iPhone using the Home Sharing feature.
The clock also remain frozen (at 12:51), so I looked at the logs and this is what I found:
11/01/12 12:46:42,783 iTunes: _NotificationSocketReadCallbackGCD (thread 0x7fff73778960): Unexpected connection closure...
11/01/12 12:55:58,614 com.apple.usbmuxd: _SendAttachNotification (thread 0x7fff73778960): sending attach for device 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.: _GetAddrInfoReplyReceivedCallback matched.
11/01/12 12:55:58,898 usbmuxd: _AMDeviceConnectByAddressAndPort (thread 0x101281000): IPv4
11/01/12 12:55:59,072 ath: _AMDDeviceAttachedCallbackv3 (thread 0x7fff73778960): Device 'AMDevice 0x10185aa80 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 33, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' attached.
11/01/12 12:55:59,072 iTunes: _AMDDeviceAttachedCallbackv3 (thread 0x10fced000): Device 'AMDevice 0x7f9122ee51f0 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 33, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' attached.
11/01/12 12:56:00,758 AppleMobileDeviceHelper: _AMDDeviceDetached (thread 0xacbba2c0): Device 'AMDevice 0x52ea00 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 32, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' detached.
11/01/12 12:56:01,682 AppleMobileDeviceHelper: _AMDDeviceAttachedCallbackv3 (thread 0xacbba2c0): Device 'AMDevice 0x33b210 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 33, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' attached.
11/01/12 12:56:34,322 com.apple.usbmuxd: _SendDetachNotification (thread 0x7fff73778960): sending detach for device 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.: _BrowseReplyReceivedCallback got bonjour removal.
11/01/12 12:56:34,322 iTunes: _AMDDeviceDetached (thread 0x10fced000): Device 'AMDevice 0x7f9122ee51f0 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 33, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' detached.
11/01/12 12:56:34,324 iTunes: _NotificationSocketReadCallbackGCD (thread 0x7fff73778960): Unexpected connection closure...
11/01/12 13:00:22,505 com.apple.usbmuxd: _SendAttachNotification (thread 0x7fff73778960): sending attach for device 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.: _GetAddrInfoReplyReceivedCallback matched.
11/01/12 13:00:22,974 usbmuxd: _AMDeviceConnectByAddressAndPort (thread 0x100781000): IPv4
11/01/12 13:00:23,344 iTunes: _AMDDeviceAttachedCallbackv3 (thread 0x10fced000): Device 'AMDevice 0x7f9123cc9db0 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 34, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' attached.
11/01/12 13:00:23,344 ath: _AMDDeviceAttachedCallbackv3 (thread 0x7fff73778960): Device 'AMDevice 0x10186ccf0 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 34, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' attached.
11/01/12 13:00:25,583 AppleMobileDeviceHelper: _AMDDeviceDetached (thread 0xacbba2c0): Device 'AMDevice 0x33b210 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 33, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' detached.
11/01/12 13:00:26,228 AppleMobileDeviceHelper: _AMDDeviceAttachedCallbackv3 (thread 0xacbba2c0): Device 'AMDevice 0x549be0 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 34, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' attached.
11/01/12 13:01:51,000 kernel: ** Device in slot: SLOT--1 **
11/01/12 13:01:51,000 kernel: ** GPU Debug Info Start **
11/01/12 13:01:51,000 kernel: 0x00009583
11/01/12 13:01:51,000 kernel: 0x000000d6
11/01/12 13:01:51,000 kernel: 0x00000001
11/01/12 13:01:51,000 kernel: 0x00000018
11/01/12 13:01:51,000 kernel: 0x0000d052
11/01/12 13:01:51,000 kernel: 0x00000001
11/01/12 13:01:51,000 kernel: 0x00000001
11/01/12 13:01:51,000 kernel: 0x00009583
11/01/12 13:01:51,000 kernel: 0x00000001
11/01/12 13:01:51,000 kernel: 0x00000015
11/01/12 13:01:51,000 kernel: 0x00000000
11/01/12 13:01:51,000 kernel: 0x00000001
It goes on like this for a while, then:
11/01/12 13:02:10,000 kernel: 0xffffffff
11/01/12 13:02:10,000 kernel: 0xffffffff
11/01/12 13:02:10,000 kernel: 0xffffffff
11/01/12 13:02:10,000 kernel: 0xffffffff
11/01/12 13:02:10,000 kernel: 0xffffffff
11/01/12 13:02:10,000 kernel: 0xc0016900
11/01/12 13:02:10,000 kernel: 0x000001b1
11/01/12 13:02:10,000 kernel: 0x00000004
11/01/12 13:02:10,000 kernel: 0xc0016900
11/01/12 13:02:10,000 kernel: 0x00000207
11/01/12 13:02:10,000 kernel: ** GPU Debug Info End **
11/01/12 13:05:56,965 com.apple.usbmuxd: _SendDetachNotification (thread 0x7fff73778960): sending detach for device 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.: _BrowseReplyReceivedCallback got bonjour removal.
11/01/12 13:05:56,966 iTunes: _AMDDeviceDetached (thread 0x10fced000): Device 'AMDevice 0x7f9123cc9db0 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 34, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' detached.
11/01/12 13:05:56,967 iTunes: _NotificationSocketReadCallbackGCD (thread 0x7fff73778960): Unexpected connection closure...
11/01/12 13:07:21,408 com.apple.usbmuxd: _SendAttachNotification (thread 0x7fff73778960): sending attach for device 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.: _GetAddrInfoReplyReceivedCallback matched.
11/01/12 13:07:21,877 usbmuxd: _AMDeviceConnectByAddressAndPort (thread 0x100781000): IPv4
11/01/12 13:07:22,308 iTunes: _AMDDeviceAttachedCallbackv3 (thread 0x10fced000): Device 'AMDevice 0x7f9123a21160 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 35, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' attached.
11/01/12 13:07:22,308 ath: _AMDDeviceAttachedCallbackv3 (thread 0x7fff73778960): Device 'AMDevice 0x10185aa80 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 35, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' attached.
11/01/12 13:07:26,592 AppleMobileDeviceHelper: _AMDDeviceDetached (thread 0xacbba2c0): Device 'AMDevice 0x549be0 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 34, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' detached.
11/01/12 13:07:27,131 AppleMobileDeviceHelper: _AMDDeviceAttachedCallbackv3 (thread 0xacbba2c0): Device 'AMDevice 0x362950 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 35, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' attached.
11/01/12 13:16:39,785 com.apple.backupd: Starting standard backup
11/01/12 13:16:40,019 com.apple.backupd: Backing up to: /Volumes/Backup di Time Machine/Backups.backupdb
11/01/12 13:17:14,751 com.apple.backupd: 2.43 GB required (including padding), 16.27 GB available
11/01/12 13:17:30,700 mdworker: Unable to talk to lsboxd
11/01/12 13:19:01,344 com.apple.backupd: Copied 4087 files (381.2 MB) from volume Macintosh HD.
11/01/12 13:19:11,801 com.apple.backupd: 2.27 GB required (including padding), 15.89 GB available
11/01/12 13:20:14,819 com.apple.backupd: Copied 3098 files (230.8 MB) from volume Macintosh HD.
11/01/12 13:20:23,700 mds: (Error) Volume: Could not find requested backup type:2 for volume
11/01/12 13:20:24,205 com.apple.backupd: Starting post-backup thinning
11/01/12 13:20:37,674 com.apple.backupd: Deleted /Volumes/Backup di Time Machine/Backups.backupdb/Galactica/2012-01-10-123033 (146.3 MB)
11/01/12 13:20:37,674 com.apple.backupd: Post-back up thinning complete: 1 expired backups removed
11/01/12 13:20:37,800 com.apple.backupd: Backup completed successfully.
11/01/12 13:55:00,567 com.apple.usbmuxd: _SendDetachNotification (thread 0x7fff73778960): sending detach for device 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.: _BrowseReplyReceivedCallback got bonjour removal.
11/01/12 13:55:00,568 iTunes: _AMDDeviceDetached (thread 0x10fced000): Device 'AMDevice 0x7f9123a21160 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 35, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' detached.
11/01/12 13:55:00,569 iTunes: _NotificationSocketReadCallbackGCD (thread 0x7fff73778960): Unexpected connection closure...
11/01/12 13:57:12,071 com.apple.usbmuxd: _SendAttachNotification (thread 0x7fff73778960): sending attach for device 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.: _GetAddrInfoReplyReceivedCallback matched.
11/01/12 13:57:12,379 usbmuxd: _AMDeviceConnectByAddressAndPort (thread 0x100781000): IPv4
11/01/12 13:57:12,550 iTunes: _AMDDeviceAttachedCallbackv3 (thread 0x10fced000): Device 'AMDevice 0x7f9123c28390 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 36, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' attached.
11/01/12 13:57:12,550 ath: _AMDDeviceAttachedCallbackv3 (thread 0x7fff73778960): Device 'AMDevice 0x10186ccf0 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 36, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' attached.
11/01/12 13:57:14,574 AppleMobileDeviceHelper: _AMDDeviceDetached (thread 0xacbba2c0): Device 'AMDevice 0x362950 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 35, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' detached.
11/01/12 13:57:14,815 AppleMobileDeviceHelper: _AMDDeviceAttachedCallbackv3 (thread 0xacbba2c0): Device 'AMDevice 0x37d1d0 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 36, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' attached.
11/01/12 13:57:35,961 com.apple.usbmuxd: _SendDetachNotification (thread 0x7fff73778960): sending detach for device 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.: _BrowseReplyReceivedCallback got bonjour removal.
11/01/12 13:57:35,961 iTunes: _AMDDeviceDetached (thread 0x10fced000): Device 'AMDevice 0x7f9123c28390 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 36, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' detached.
11/01/12 13:57:35,962 iTunes: _NotificationSocketReadCallbackGCD (thread 0x7fff73778960): Unexpected connection closure...
11/01/12 14:05:14,778 com.apple.usbmuxd: _SendAttachNotification (thread 0x7fff73778960): sending attach for device 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.: _GetAddrInfoReplyReceivedCallback matched.
11/01/12 14:05:15,177 usbmuxd: _AMDeviceConnectByAddressAndPort (thread 0x100781000): IPv4
11/01/12 14:05:15,342 ath: _AMDDeviceAttachedCallbackv3 (thread 0x7fff73778960): Device 'AMDevice 0x10185aa80 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 37, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' attached.
11/01/12 14:05:15,342 iTunes: _AMDDeviceAttachedCallbackv3 (thread 0x10fced000): Device 'AMDevice 0x7f9122fad930 {UDID = 8851d03d087cdedc1ee4cd34f58d63e07cd164e8, device ID = 37, FullServiceName = 00:26:bb:fc:33:cf@fe80::226:bbff:fefc:33cf._apple-mobdev._tcp.local.}' attached.
At this point I restarted the computer using the power button.
For the record, a few months ago I replaced the hard drive thinking it could be the problem – good thing I needed more space anyway because it happened twice AFTER I replaced it.
Any help?

Welcome to Lion, I have 10.7.4 and this has been a problem every two weeks or so since 10.7.1. Fun.

IMac freezing with increasing frequency

For the last couple of months my iMac has been crashing with increasing frequency.
The crashes manifest as freezes and seem to random. Sometimes they happen when I'm doing Finder operations, sometimes in Safari, sometimes Mail, sometimes iTunes, sometimes any of a dozen other apps I run regularly. These freezes never seem to leave behind a crash report. Also, after I do a hard boot, sometimes the first one or two attempts to restart also result in a freeze during the startup sequence. Sometimes I only get to the startup gear, sometimes I get to the blue-screen right before the login, sometimes I get as far as half of my stickies popping up and then I freeze again. I've tried Disk Utility -> Repair Disk many, many times (normal SOP for me following a hard boot) and there are never any errors reported. Disk Permissions will occasionally find a file or two that needs to be repaired, but that never seems to make a difference. I've also run the hardware check dozens of times; no errors. I've even fsck'ed a few times to see if that reported any problems that Disk Utility didn't - all to no avail.
I've tried killing all non-essential processes and turning off all of my Login Items, but this didn't help either.
Sometimes I'll restart and everything will be just fine for days, maybe even a week or two, then all of a sudden, freeze after freeze after freeze.
Today has been particularly bad. I haven't been able to keep things going for more than about half an hour. That is, until I restarted in safe mode. In anticipation of possibly having to take my machine into the local Genius Bar (or maybe having to try a clean install), I decided to clean up my desktop and backup a bunch of critical files, etc.. Also, I'm drafting this message in safe mode, since the last two times I tried to do it from a regular boot, Safari froze the machine.
So far, no freezes in safe mode. However, no sound and other restrictions, so this is obviously not a particularly useful mode to operate in...
Before I go any further I should mention that there is another symptom that may or may not be related, but I suspect that it is. Sometimes windows get blocky noise in them. Lots of little rectangles which seem to be copied from elsewhere on the screen. If I force the window to refresh, everything will look OK again, but it might happen again immediately or it might take a while to happen again.
My initial gut reaction was that there was a memory problem in the display RAM, but as I said, the hardware check has not found anything and I tried it again, and again.
So far I have not associated these blocky windows directly with a freeze. In other words, the two events seem to be independent, though they could very well have the same root cause.
Well, that's all I can remember off the top of my head.
Frankly, I getting to be pretty sure that the problem was with the hardware until I booted in safe mode and am not seeing the problem.
I would appreciate any diagnostic advice that anyone would care to offer.

Unfortunately I have had this very experience with freezing/crashing iMacs at TWO different jobs and TWO different computers. In each case the Macs where brand new, out of the box. The first time in 2006, I had started a new job and convinced my boss (a die hard PC fan) that macs where the way to go in the art department. Reluctantly he plunked down for a 24" iMac. Within a couple of days, the crashing and freezing started, randomly at first. Then every few hours-regardless of the application load. Finally, it would run for three or four minutes, than Kaput. Applecare sent a tech who said it was a processor problem. With the processors swapped, the freezing stopped for a few days, then returned with a vengeance. Not only was it a nightmare- seeing as I had sworn up and down to the Admins that Macs where great, but our workflow in the department virtually stopped at this point. Within a week they had me back on a wonky PC. Suffice it to say, my tenure at that company was a short one. The next time about a year later was at a print shop. We had migrated our software and files from our Macbook Pro, Mac mini and g5 (which strangely enough was really slow) to a brand new 24" iMac and within three days, the whole gamut of crashing to complete freeze. It cost the company roughly
$50 000 in lost file processing that week. In both cases we had tried everything from moving the computers to a cooler room, fresh install (Tiger in the first case, Leopard in the second), you name it.
At this point I decided that I should find some work in Graphic Design that just doesn't depend on Macs. I also know a slew of people (industry & personal) with a frightening number of horror stories about their iMacs. All with the same symptoms. This has REALLY shaken my faith in Apple. And even tho I'm a fan and love the OS, I honestly don't think I'd invest in one without a serious overhaul of the line.

My screen is freezing with broken pixels and lines

iMac i7 2.93Ghz 12gb DDR3 memory Running 10.7.5. Start Up Disc Lion HD
The issue appears to be random. Started a couple of months ago. The screen starts to freeze, mouse no longer works and unable to force quit apps or shut down normally and appears pixelated with various lines across the screen.
I can t say what triggers it and it seems to happen even when just a few minor apps are open like mail and Firefox.
The computer does seem to run hot and starts to work harder it seems.
The only way to resolve the freeze up is to hard shut down then pull the plug out of the power on wall and use the Pram key strokes to reboot. If I don't zap the pram or remove the power plug it wont re start.
Hopefully I can attach a picture here.
Any info as to how to fix would be happilly recieved
Jackie

Pretty much have the same problem! Everything work, but always got the pixels blinking all over the screen, until the whole computer freeze (or at least the screen) and I have to reboot it. I can reboot with the button and my gear works (mouse etc) Had to buy a new mouse recently though. Don't know if it has anything to do with the comp.
The comp seems to work way better in games (Heroes of Newerth) where the pixels are all gone. The comp. also seems to be a bit slower than usual overall, thinking at random.
iMac i7 2.93Ghz 8gb DDR3 memory Running 10.10.2
I am about to buy new graphic card. Would appreciate some help before that to confirm whats wrong.

Imac freezes with horizontal green lines

My Imac crashed the other day with green lines horizontally across the screen, the mouse would react and move around, but could not open any apps. We took it to get repaired at Core Mac and he said it worked fine. We brought it home today and it crashed again. I think it may be the graphics card? Can anyone help?
Thanks
Not sure what model as I cannot check right now.

I suspect a hardware problem. I'd recommend taking it to your local Apple Store or AASP. You can try to run Apple Hardware Test though in Extended Mode.

IMac Freezes with opening of Mail

My iMac has been working great for the past four years, but recently it has been freezing up a lot. The internet won't work, most notably Safari, but the other application, such as word, freeze as well. There are two emails in my mail account that will not delete and instead turn grey in the inbox. When I click to open the emails they show no message but just a sender address. One is from Macy's and one is from Finish Line. Do you think these could have anything to do with my iMac issues or is it something else?

Try repairing your hard drive with disk utility, also repair your permissions. If you are still have problem you need to check your CPU and your RAM usage in activity monitor. Also check your remaining hard drive space you should have at a minimum 10% or more.

2008 iMac freezes with black and white patterns

Hi,
I'm surfing the web for a hint up and down the last 2 days w/o success.
The day before my iMac from March 2008 suddenly freezed and showed black and white pattern. A reboot doesn't help, the wheel moves for a while and then freezes. Boot into save mode doesn't work it looks like it loads but then again freezes.
Screenshot : http://img714.imageshack.us/img714/1751/1319334548189.jpg
I fear it's the gpu, is this replaceable ? I read a lot yes but seems to depend on the production year.
If iMac is not useable is it useable as an monitor only ?
If it's display is it replaceable ?
Also can someone share how much I can expect for gpu or display repair ?
Thanks for any hints.

I brought the iMac today to a service center. 1 hour later they already called me stating that the gpu is dead and they recommend to change for 780 SGD plus 127 SgD for diagnosis which is ard 910 USD (100 USD for diagnosis) :( .
What a pain. The gpu is 8800 GS after some reading well known for failure, I told that the guy and he said some do and it's still working for a year...well.. 900 bucks is some cash. Since I have all orig apple products, 3 iphones, 2 ipads and the iMac, first time I'm considering to do something not original....
I've told the guy that I have to sleep over it.
Anyone who was in the same or similar one way road ? Repair or go for hackintosh or give Apple another chance with a new Mac ?

Blank screen, iMac freeze with Bip, Bip, Bip alarm!!!

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