On a previous question i posted, i asked for help on fixing my windows vista box because it keeps going to blue screen. No one seems to have the answer, so now i want to install Windows 7. I want to know if i can install 7 without having to reformat my hard drive and having to lose all my files. I've already confirmed the hardware is working because i installed Ubuntu 9.10 on my external hard drive and it runs on my system fine. I tested the memory using vista's memory test and Ubuntu's memory test.

here's the previous post: http://superuser.com/questions/125897/i-really-need-help-resolving-a-window-vista-bsod-blue-screen-crash-on-my-deskto