When my system comes out of sleep it reboots why
When my system comes out of sleep it reboots why
Mac Pro, Mac OS X (10.7.5)
When my system comes out of sleep it reboots why
Mac Pro, Mac OS X (10.7.5)
See if your Mac suffered a recent kernel panic. If it did, it will save the log and it can be read out later using this technique. Cut and paste the text here for readers to analyze.
Sounds like another flaking out 2008 Mac Pro 3,1.
https://support.apple.com/kb/TS1367
Symptoms
If your Macintosh computer won't turn on, here's how to troubleshoot it. Please keep in mind that although your computer may display similar symptoms that prevent it from showing video, this article discusses what to do if the computer won't turn on, meaning that when you press the power button:
Resolution
If your computer won't turn on, try each of these steps:
reset SMC For "Mac wont' turn on or boot" and related
https://support.apple.com/kb/TS1367
General purpose Mac troubleshooting guide: Isolating issues in Mac OS X
Creating a temporary user to isolate user-specific problems: Isolating an issue by using another user account
Identifying resource hogs and other tips: Using Activity Monitor to read System Memory and determine how much RAM is being used
Starting the computer in "safe mode": Mac OS X: What is Safe Boot, Safe Mode?
To identify potential hardware problems: Apple Hardware Test
General Mac maintenance: Tips to keep your Mac in top form
When my system comes out of sleep it reboots why