The above Imac start rebooting itself after i shut it down.
Thought it may be some corrupted file , so I did a clean installation of Yosemite 10.10.1
But the problem still remain.
Hope someone can help out .Thanks in advance Cheers.
iMac, Mac OS X (10.0.x)
Hello there, Switchoff.
When dealing with a recurring kernel panic that initiates restarts on your system, the following Knowledge Base article provides some great information and proves a great resource for isolating your issue further:
Troubleshooting a recurring kernel panic
Diagnosing a recurring kernel panic can be difficult. If you need help with this process, consider bringing your Mac to a Genius at an Apple Store or an Apple Authorized Service Provider for help. If you plan to visit an Apple Retail store, you can make a reservation (available in some countries only).
Tip: To help diagnose recurring kernel panics, record the date and time it occurs, and any information that appears with the kernel panic message.
- Was the computer starting up, shutting down, or performing a particular task when the recurring kernel panic happened?
- Is the kernel panic intermittent, or does it happen every time you do a certain thing? For example, were you playing a particular game, or printing at the time?
- Does it occur only when a certain external device is connected, or a device is connected to a certain port?
Isolate hardware or software as the cause of the issue
To try to figure out if the issue is related to software or hardware, use the computer with a fresh installation of OS X on an external drive.
- Start the Mac from OS X Recovery.
If a kernel panic still occurs when started from Recovery, there is likely a hardware issue. See the "Hardware troubleshooting" section below for additional information.- Open Disk Utility and use "Repair Disk" on your Mac's internal hard drive (named Macintosh HD by default).
Important: If Disk Utility is unable to repair the internal drive, you should back up your important data immediately and if possible, reformat the drive. Consider bringing the Mac to a Genius at an Apple Store or an Apple Authorized Service Provider for further diagnosis. Be sure to ask that, if the drive needs reformatting or replacing, they contact you about escalating your case to a special data recovery service. If you plan to visit an Apple Retail store, you can make a reservation (available in some countries only).
- Connect an external drive with at least 10 GB of free space. Note: Make sure the external drive does not cause kernel panics, and is the only device on its USB, FireWire, or Thunderbolt port. Connecting the external drive and its cables to another Mac can help make sure the drive does not cause kernel panics.
- Install OS X on the external drive.
- Start up from the external drive.
- Use Software Update to install all updates until it reports "Your software is up to date."
- Don't install additional software on the external drive, but instead use the Apple applications to surf the web, view QuickTime movies, email, print, scan, and/or other activities. Continue using your Mac for the amount of time it would usually take for the issue to occur.
- If a panic occurs, select the "Hardware troubleshooting" section below to further diagnose the issue.
If a panic does not occur, select the "Software troubleshooting" section below article to further diagnose the issue.
Once you've isolated to hardware or software, proceed down the rest of the document for more steps.
Thanks for reaching out to Apple Support Communities.
Cheers,
Pedro.
Thanks very much Perdo d
Hello again, Switchoff.
You're very welcome. I hope the information helped with your situation.
Sincerely,
Pedro.
Imac mid 2011 reboot by itself after shut down
