Thank you very much for your reply! I haven't tried the Vista Drivers but Windows 7 installed its own WDDM drivers at the very beginning and the card continued crashing. It was only then that I tried the AMD drivers, to no avail. I do not use the Catalyst Control Panel so I never installed it, just the drivers. I followed
lordsmurf's suggestions and installed the Omega drivers. I have just tried playing a couple of videos and so far it hasn't crashed. I will keep you informed.
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Thank you very much for your reply! I followed the your suggestions and installed the Omega drivers. I have just tried playing a couple of videos and so far it hasn't crashed. I keep my fingers crossed though

. The utility program that comes with the drivers wouldn't run on Windows 7 x64. I will keep you informed.