2009 Early iMac Freezing 2.93GHz,24", ATI 4850
It's a 2009 2.93GHz, 24" iMac, 4GB RAM with ATI Radeon 4850.
As usual when I take a new delivery, perform a hardware test using the test diagnostic DVD that came with it, checks out fine.
Next, erase the HD and reinstall 10.5.6 from the supplied DVD, applied the updates, then use Disk Utility to check the HD and repair permission, no problems, then after a couple of minutes, the iMac froze. I have nothing connected except for the keyboard and mouse.
Mouse does not move, keyboard does not respond to input. Pressed the power button for 5 secs to shutdown. Booted up in single user mode to repair HD, started up fine again, started to install my apps and move the files over from my previous iMac. Played movies on it, and it froze again. Mouse & keyboard does not respond to input, just a short 1 sec sound from the movie that kept looping.
This happens a few times a day.
Got fed up, reinstalled the OS again, zapped NVRAM, PRAM, Disk Utilities check, repaired permissions, started to play COD4, just a couple of mins into the game, the iMac froze again. Keyboard & mouse will not respond to input, sound stutters.
What's wrong? Any ideas?
2009 Early iMac 2.93GHz, 24" ATI 4850, Mac OS X (10.5.6)