iMac is freezing up on me... Please HELP!!!
Hello all,
Recently I've been having problems with my 24" white iMac (late 2006) and hope that someone can help me. Basically my machine has been freezing intermittently necessitating a hard reboot. I can usually tell when it's about to lock up as some of the icons/windows on screen will begin to leave anomalous glitchy impressions on the desktop. I guess the best way to describe it is if I move an open window it will leave a partial "carbon copy" outline of that window on the screen and if I then move the window over that glitchy outline it will erase it however it will create a new impression as soon as I move it again. This will usually go on for a couple of minutes and then everything will lock up. I'll be able to move the mouse cursor however I can't interact as everything is frozen. As I said the only way out of it is to restart the computer with the power button. I've also noticed that the whenever I interrupt a screensaver or if I'm playing videos this also seems to bring on the freezing.
I was worried that it might be the graphics card or the logic board at fault so I ran a hardware diagnostic but no known issues were discovered. I'm not sure how thorough this test is at detecting hardware problems but if it is I'm a little relieved that it's probably software related... *Fingers crossed*.
I tried resetting the PRAM and that seemed to fix things for about a week or so but today the problem resumed. I have a copy of TechTool Deluxe that I will also run but I thought I'd first hit up this wonderful forum for some educated advise. Has anyone experienced this exact problem and resolved it somehow? If there's anything I can try, short of a fresh install, I'd really appreciate hearing about it!
My system:
2.16ghz Core 2 Duo
3GB DDR2 SD RAM
Nvidia GeForce 7300 GT
Snow Leopard 10.6.8
Thanks in advance guys!
Regards,
Bobby
iMac, Mac OS X (10.6.8)