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Author Topic: iMac startup woes
K7LU
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Icon 1 posted July 20, 2007 15:36      Profile for K7LU     Send New Private Message       Edit/Delete Post   Reply With Quote 
Having trouble with an old indigo iMac. A few weeks ago it was showing signs of needing a battery replacement (i.e., forgetting the time.) It was about to be relocated and during the relocation it was powered down and stored for a week or two. After that, it wouldn't start at all. Battery was removed and found to be completely dead. New battery was ordered and installed. I thought that would cure the problem, but now it is displaying some bizarre behavior as follows: If you plug it in and push the power button, the button lights up, but the display never lights, you never hear any HD access or any other sign that it's booting. If you immediately unplug it and try again, you get the same result. But, if you leave it in the "brain dead" (i.e., power button lit but no other signs of life) state for several (like 15 or more) minutes and then unplug it, plug it back in and push the button, it starts up just fine. I have some ideas of what might be wrong, but I'd rather not go in and start prodding around if this is a known problem and someone can tell me exactly where to look or what needs to be done. Can anyone help??
Posts: 4 | Registered: Aug 2006  |  IP: Logged
Zwilnik

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Icon 1 posted July 20, 2007 16:26      Profile for Zwilnik   Author's Homepage     Send New Private Message       Edit/Delete Post   Reply With Quote 
If the PRAM battery died then the PRAM data will probably be gone. As this includes which HD to boot from etc. it'll give you some startup issues.

First thing to try is the classic PRAM reset. power up and hold Command-Option-P-R at the same time until it reboots for the 3rd time. This resets the PRAM data to defaults and is a good general cure all [Smile]

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