So I just built my first mid level pc. I did not have an os so, and i was dying to turn it on and get on the web, play games, and the whole 9 yards. I finally grabbed a 30 day trial or cracked version of vista my friend gave me years ago. It was a little scratched, but I put it in anyway. Well it froze during the final installation stage. I let it set for 2 hours before shutting the pc off. I've only turned it on once and it said error and to put the os back in the drive and repair. I didn't do that, shut it off, and haven't messed with it since. I plan to just buy windows 7, and be more patient. My question is can I install windows 7 over the mess of vista I've made? Or do I have to get rid of whatever vista is on my hard drive? And if I have to do that... How? I know if I wasnt an idiot I wouldn't posting this. So please don't remind me of what I did and how stupid it was. Thanks.