iMac keeps rebooting at startup
On startup my mac has a gray screen, the apple and progress bar come up and then stops halfway through. Then it waits a few minutes and tries to reboot. I get the same thing.
I put a new HD in, thinking that was the problem and installed new MacOS.
Was working fine for 6 hours and then the screen went gray again and it keeps rebooting.
Hardware test says its all okay.
- Tried safe mode.
- I can get it to come up in Target Disk Mode.
Also Tried:
- Zapping NVRAM
- Reset SMC
Any other suggestions?
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2 Комментариев
Does anyone think this is a graphics or logic board. Hardware test showed everything was okay.
из Steve McGowan
Steve, I have same problem, did you get a solution? I would be grateful to hear what it is.
Robert H
из Robert Hulley