The most common cause of random freezes like that is a failing power supply. Do not test your power supply on another motherboard. Rather, get another power supply and test it on the motherboard you have.
Also, look carefully at the capacitors on your motherboard and check for bulging or leaking on the tops. Do a Google image search for 'bad capacitors' to have a comparison. The bulging can be slight so, again, look with care.
Another common testing method is to remove all sticks of RAM except one and test it with Memtest86+. If it passes, take that one out and put another one it and retest. Rinse and repeat until you've been through every stick you had installed.Use MemTest86+ to test your memory for failure.
- Donwload the Pre-Compiled Bootable ISO (.zip), extract the ISO to a folder of your choice, and burn it to a blank CD. Instructions
- Boot the affected computer from the CD. If necessary, adjust your BIOS settings to boot from the DVD/CD drive first.
- Memtest is designed to repeat its test continuously. It is recommended that you allow the program to complete several 'passes' before declaring your memory error-free.
- These tests are very lengthy. It is recommended to run Memtest86+ overnight.
- If Memtest finds an error, it will list it in red. There is no need to continue the test if an error is found.
- After several clean passes (or an error) Press Esc to stop the test and reboot.
- Report the results in your next reply.
Edited by LucheLibre, 09 January 2012 - 07:36 PM.