Just installed Windows 7 Ultimate. It decided to wipe clean my old HDD (Despite 7 being installed on an entirely new HDD). So now I'm stuck here on 7, and I can't go back even if I wanted to

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So far so good, though. I'm not bluescreening like I was with XP, which had a software corruption error. Figured there was no point re-installing XP, and to move on.