Recently my 24" iMac 2009 started freezing every 60-90 minutes. I can still move the mouse, but nothing seems to respond anymore. This is what I tried so far:
Any thoughts on what you think might be the problem? Any kind of help would be very much appreciated!
- Disconnected all external devices
- Tested the RAM memory by removing them both 1 by 1 (as well as running a memtest
- Reset the SMC (e.g. but power for a while)
- Reset the PRAM
- Started in safe mode (still crashing)
- Tried re-installing OS X. First few times that didn't work (crashed during setup, after a few times it got installed but still freezing).
- Temperature of the CPU never goes above 40 degrees. All other items are cooler.
- Tried to run the hardware test, but that doesn't seem to be installed on this OS X (so haven't been able to run this test).
Any thoughts on what you think might be the problem? Any kind of help would be very much appreciated!