So I have burned the .iso to a dvd. I've tried upgrading to it 4 times, everytime its the same thing. It finishes the download the goes to the startup screen twice. After the second time it says "windows has encountered a problem and is trying to fix it", or something along those lines, then it tries startup again and tells me "system thread exception not handled" and has to restore windows 7. Has this happened to anyone??? Is there something I'm doing wrong? I'm not sure if it has something to do with the fact that my current version of Windows 7 hasn't had a CD Key entered yet because it was my buddies disk and I still have to buy the upgrade. Any help is appreciated!!