you should try the 64 bit release of windows 7. all these issues started when you tried boxing? if so your issue might be the ram limitation which if i'm not mistaken includes all dram and vram combined. and since the RC edition of 7 is free all you have to do is go to the microsoft's website to obtain it, give that a shot (prior to doing so grab all the 64 bit drivers for you mobo, vcard, and all extras you have) and give it a shot and see what happens.