Activation Problem

Here's my problem. I downloaded Windows 7 from a special college deal for $30 I upgraded from vista, but it screwed up my computer. I would get blue screens at random times while I was using it. I decided to clean install instead, but then I realized the stupid file they gave me only works for upgrading from Vista. I used a version my roommate had and now it won't accept my key. I can't seem to find the boot disks for vista that came with my computer. I was wondering if there is any way Microsoft would get me another key? I'm not buying a new one for $100 bucks or paying to contact customer service. Microsoft is really pissing me off now since my Xbox just broke and they won't fix it cause it's out of warranty. Let me know if you have a solution. Right now it is saying that I have a counterfeit version of Windows, but I guess it's better than the blue screens. Will I get kicked off of Windows or can I keep using it like this? Let me know


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