I know there has been a lot written on it in the past, but what to do when you got it???I don't know where to start to work systematically on the problem. Anyone who knows the issue through and through?

You inspect the card for signs of failure like blown capacitors, as well as check the fan's operation and clean the fan path. If everything's ok there, then you uninstall and reinstall the driver. If you still have problems report back and we'll go from there.

You inspect the card for signs of failure like blown capacitors, as well as check the fan's operation and clean the fan path. If everything's ok there, then you uninstall and reinstall the driver. If you still have problems report back and we'll go from there.

HI, thanks for your tips. I did what you suggested , even updated the nvida driver. I also must remark that I have two separate hard discs in my pc (one configured on xp and one on vista) both have the same problem.

If you have another PCI-e slot on your motherboard you can try moving the card to there, but at this point it is highly likely you have a faulty card. The only way to know for sure would be to move that card to another computer or to test another card in your system, though.