Its not any help here but I had an Ati 9000 quite some time ago made by Gigabyte I think it was and it was a nightmare with the drivers. If you used the original drivers it was ok but when you updated them to the latest ones for the Ati website all hell would break loose and I'd have to restart in safe mode and reinstall the original drivers. Now I've had 2 cards since them both GeForce ones, got a MSI 5900XT now and they've had no probs at all. The only thing I can think is the particular card I had at the time just didn't like the drivers. I'd try emailing Leadtek and see if they say anything.