I am geting real desparate now, my machine locks up about 9 times a day at work, forcing me to lots tos of stuff all over again

It just locks up the mouse moves, with no response, and the pc speaker emits a sound kind of similar to a geiger counter !! (click,click,click on every movement of the mouse) I have a sneaking suspician that it may be to do with the TNT 2 card installed. I know its not an ram issue as I have tried other ram.

Any help will be appreciated

(occasionaly it gets a kernal32 error too, if that helps)

thanks everyone