I haven't done much with Windows 7, but from the looks of things I can't really get a good idea of how the heck to do one, but eh, that's just me. Things have changed since XP I guess, rofl. Just make sure you don't kill the computer when you're formatting it. And also, you'll lose pretty much everything to do with the computer, so keep in mind that every single thing will have to be installed again, such as hardware, modem/router, etc.OK i get the homegroup thing now. I think the virus still hacked it though,and it wont let me access a repair install.