Hi, I have a dell dimension e510 pentium d 2.8 with a radeon x600 hypermemory 256 video mem. Recently i upgraded the firmware from 256 video memory to 512. The computer runs ok till i try to play a 3d game then freezes and screen goes black. Then the ati catalyst comes up and says something about the graphics processor is not responding to commands from display driver i have to 2gb of memory in the system. is there a way to pinpoint whats wrong?Did i fry my video card by doing this firmware? Or is there a way to downgrade the firmware back to 256 video memory?Or should i just go buy a new video card? Thanks for any help!