I know similar questions have been asked, but I never really found anything exactly like mine. I am running a dual boot of XP Pro 32, and Win7 RC . I bought the student upgrade to Win7 and managed to get a working ISO, and get it burnt to a DVD. But my Windows 7 64 wont boot. I do have a 64 bit processor, just never bothered upgrading OS's from my old 32 bit machine. My idea was reformatting the Win7 drive, reinstalling the XP and then doing a clean install over that. Does that seem plausible?