Originally Posted by wanna_buy
No, I can't re-test the card in the another computer.
The problem might be software or hardware related.
As some users pointed out, the quickest thing you could do is test the system with all its components (CPU, RAM, Chipsets) set to the default clocks/voltages (you do this by loading the default/failsafe settings in your CMOS).
If it's software related, it could be a device driver problems or due to an instable OS.
If it's hardware, testing the card in another system might give you clues about a faulty PSU or Motherboard.