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I'm afraid I've got the same problem. I restarted the Imac yesterday. The close down took more than 3 minutes. This happend before. I forced the closing down by pressing the power button. After normal start up I could not start iTunes anymore. All other apps function properly. The desktop shifts left and a black screen appears. I can operate the dock and ...


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There have been bugs reported with certain OSX Operating systems regarding your issue. There are a multitude of things you can do. 1. Update the OSX on your computer. 2. If the OSX is updated, try uninstalled that OSX and re-installing it. Sometimes there are issues with typical functions when the computer is being installed or updated. 3. Try switching ...


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I have seen this issue quite a few times and none of the solutions seemed to work very long. The issue kept on returning. I do think I found a cause - although I only test 4-5 times. It seems to be an issue that keychain access is open - strangely enough :) Close keychain down and mail works fine again without deleting anything


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Run iTunes on PC and make sure that you are using the latest iTunes. Then connect your Device with computer via USB cable, and then Tab on summary option, see in the left side bar of iTunes Now Select restore option from iTunes and then confirm the Restore Message for better results. After this unplug your Device and Restart it.


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Installed Yosemite on 08 iMac. Boot up screen froze at 50%. I did the restart in Safe Boot mode as instructed above. Computer ran me through 3-4 settings selections and icloud drive set up while in safe boot mode. I did not reinstall Yosemite. Restarted computer in normal mode and it seems to be working great. Thanks!


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Already tried NVRAM reset? I've been surprised by how many problems this "fixes": https://support.apple.com/en-us/HT204063 Turn on your Mac. Press and hold the Command-Option-P-R keys immediately after you hear the startup sound. Hold these keys until the computer restarts and you hear the startup sound for a second time. Release the ...


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A clean install of Mavericks might help or even better, update to Yosemite for more bug fixes.


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If your issue appeared with 10.10.3, I am 98% certain it is a bug in OS X Yosemite, introduced with the 10.10.3 update and related to Intel HD 4000 GPUs. Welcome aboard. The kernel panics are totally erratic, some users have also graphics glitches like you describe. The only common feature is having an Intel HD 4000 GPU. However, your case seems more severe ...


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The same GPUReset problem occurs on the 15" macbooks too though, and there disabling the HD4000 fixes the issue.


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After a frustrating day I decided to contact AppleCare. The tech had never heard of this issue. We attempted myriad fixes booted up in safe mode, PRAM reset, and a variety of other things to no avail. Finally, they had me reinstall the OS X and it appears to have fixed the issue. Not ideal to have to do such a drastic fix on a 2 month old laptop...but there ...


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Please consider creating a backup first. Shutdown your mac and restart it in safe mode (on + shift). Check the HDD for defects - disk utility will be sufficient for a quick check up. read the other comments and do updates. From your logfile i guess it might be the ram - the other options are quick to check for free so do it first. Replace ram if necessary!


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In OSX Mavericks, I had also turned off VM compression (via the vm_compressor=1 boot-arg & reboot), because it seemed implicated in some very sluggish sessions when using a high-RAM VMWare Fusion guest. Everything seemed to work fine in Mavericks, no compression but still the expected paging. After upgrading to OSX Yosemite (10.10.4), I was getting ...



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