Boot seems to need a kick start. Any ideas?

Double check the RAM is firmly and squarely seated in the slots, verify cable connection between power supply and logic board. Run the hardware test disk it may give you more information.

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Thanks. Have done that but can't run the hardware test as doesn't get far enough into the boot for that. Anyway where is that on the new iMacs?

由 Nick Sexton 完成的 2012年7月10日

What do the LED diagnostics indicate. Sounds like a power supply or logic board issue. I agree you should probably contact Apple Support even if you are out of warranty there could be a silent recall on this.

由 originalmachead 完成的 2012年7月12日

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Thanks. Have done that but can't run the hardware test as doesn't get far enough into the boot for that. Anyway where is that on the new iMacs? — Nick Sexton
What do the LED diagnostics indicate. Sounds like a power supply or logic board issue. I agree you should probably contact Apple Support even if you are out of warranty there could be a silent recall on this. — originalmachead

Dan @danj 声誉积分: 479.9千 Self employed contract worker 35 329 971 · Answer 1 · 2012-07-11T19:18:13-07:00

Dan @danj

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How new? If it's still under warrantee bring it back for repair or exchange.

If not do you have your system plugged in a good surge strip or UPS (I highly recommend it!) If not you could have been hit by a power surge or lightning.

Before we can go any further, what is the last four digits of your serial number so we can figure out which model you have.

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