Chosen Solution
Hi. When iMac goes sleep it wont wake up instead it will restart I have booted in safe mode but still does the same thing . I guess its hardware issue ? Can anyone please advise me which part I should suspect, power board ? Thank you for your help in advance .
I never liked to leave my computer go to sleep this always causes problems over the years and the cause is almost always the BIOS. Try change the CMOS battery for a new one. You know if the CMOS battery is death disconnecting the computer from the outlet and connect again and turn on if lose the date and hour the battery is death a need to be replaced. This can help with the sleep problem too. My recommendation is setup the monitor to turn off after 30 Min. without activity and turn off the sleep mode in the system… :)
