Imac 24" - transparent screen, now doesn't restart

my 2 year old 24" imac screen went to a transparent grayish whitish screen, since I could not get it to come back to normal I powered off to reboot. Now the imac will not even restart when I press power "on" button. Any ideas or help???

It sounds like you have tried what Apple recommends in this article:
http://support.apple.com/kb/TS1440
DO NOT OPEN IT UP this will void you warranty!!!
The next step would be to bring it in for service, you are covered by warranty so I wouldn't worry and hopefully you have been keeping backups on TM. If you have when you bring it in let Apple know and they can give you instructions on how to restore all of your data. If you purchased AppleCare you are still covered by telephone support and can call them Monday morning, they might have some other tips before you bring it in.
Regards,
Roger

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