I am using Windows 7 on Bootcamp and got a bunch of viruses, malware, etc. The bootcamp manual shows how to uninstall Windows by formatting the drive, which I don't want to do. Is there a way to reinstall Windows 7 without formatting the drive? I'm running OS X 10.6.8, not sure if bootcamp has versions, but I couldn't find that if it does. I got the product key from my registry on the windows side, and I'm planning on using an iso. Also, these are legitimate copies. Thanks.