TS1587: Intel-based iMac: What to do if your computer won't turn on

Learn about Intel-based iMac: What to do if your computer won't turn on
ebec
Level 1 (0 points)

Q: When I turn on my iMac, I get a light colored screen and beeping about every 5 seconds. Running Snow leopard. How can I get it started?

I tried starting my iMac and all I get is a light colored screen and a beeping sound about every 5 seconds. No sound from the drives. How can I get it to turn on?

iMac, Mac OS X (10.6.3)

Posted on May 21, 2012 6:58 PM

by BGreg,Solvedanswer
BGreg BGreg
Level 6 (17,522 points)
A:

That usually means there is a memory problem. Either no memory or bad memory doesn't pass the power on self test (POST). See http://support.apple.com/kb/HT2538

 

You can try reseating the memory, using 1 card at a time, swapping the slots the cards are in, or getting other working memory to try in your system. If all of those fail, then take it in for service. See http://support.apple.com/kb/HT1423

Posted on May 21, 2012 7:05 PM

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