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My powermac g4 startup problem - grey screen and folder+blinking

Ive had my powermac g4 dual processor for about 8 years now. about 3 months ago I noticed problems with my sleep mode, i could put it to sleep but it wouldnt wake up. then a couple months later it would only start to grey screen, but, if i shut it off and back on a couple of times it would work again. now it only goes to grey screen with the folder and blinking question mark after about 2 minutes. also, now when I manually shut it off after it goes to grey screen it wont turn on at all, (no power) I have to unplug it from the wall then replug it in for it only to return to grey screen. Could it be my power supply? Ive already read other posts about hard drive problems, but that doesnt seem to be the issue, I cant boot from anything, holding c doesnt work. also, There is a squeaking noise coming from somewhere, I cant tell where, souds like the fans in the power supply. Thank you, Mike

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  • amdaly May 10, 2009

    My mac is about 4 years old now and have had similar problem with it since it was about 6 months old. It was in for repairs twice under warranty and then started acting up again about 2 weeks after the warranty expired. I did call mac but of course I was out of luck as I had no warranty. I found that if I did not allow it to go to sleep then it was o.k. until just yesterday. Now I cannot even get it to boot. I have tried the shift and shift S but it does not help. I get a grey or blue fuzzy staticy screen. It also has a high whining sound. I also occasionally get a blue screen with diagonal dashes through out the page. I am fortunate to have a laptop as well so am trying to figure out if I can get my mac back up and running or if I take the hammer to it.

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When booting immediately after the first chime before the grey screen hold down keys (apple,option,p,r) allow the computer to restart if it still goes to that blank screen restart again and this time hold down only the (option) key or maybe (option,s) on that model try option key first then select the main start up disk from the menu and click the arrow underneath

Posted on Apr 23, 2009

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