iMac starts and powers off before getting all the way on
iMac starts and then powers off about 3/4 the way thru power on?
iMac Line (2012 and Later)
You can make a difference in the Apple Support Community!
When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.
When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.
iMac starts and then powers off about 3/4 the way thru power on?
iMac Line (2012 and Later)
Unfortunately that is generally caused by a hardware issue.
Try Safe Mode, as per > https://support.apple.com/en-us/HT201262
And macOS Recovery, as per > https://support.apple.com/en-us/HT204267
Then the Apple Diagnostics, as per > https://support.apple.com/en-us/HT202731
Sadly if none of those get it going or help, see > https://support.apple.com/en-us/HT204267
Unfortunately that is generally caused by a hardware issue.
Try Safe Mode, as per > https://support.apple.com/en-us/HT201262
And macOS Recovery, as per > https://support.apple.com/en-us/HT204267
Then the Apple Diagnostics, as per > https://support.apple.com/en-us/HT202731
Sadly if none of those get it going or help, see > https://support.apple.com/en-us/HT204267
iMac starts and powers off before getting all the way on