if you have a windows disc, you can boot off that...boot up the comp, there will be a screen(may go by FAST) hit del to enter setup, go to advanced, then go the boot up order(something like that), now hit page up on number 1, till it goes to dvd/cd device, press esc, then exit, hit y then enter....what it will do know is reboot, and it will detect the disc, press any key as it says, you should be in the windows set up now =] follow the instructions from there!