assuming you have the vista install cd, put it in the rom drive and boot to cd drive by pressing f10. select the cd/dvd drive. select format c (or whatever letter there is) drive (not quick format). and make a partititon. then reboot and install vista
dell also supplies a dell driver cd with all teh drivers you need. once you get the internet drivers working, get microsoft update working to update everything
the only drivers ive ever installed were the video card, sound, and wifi/ethernet, and input drivers
my computer has vista and has not been acting right for awhile. i would like to do a complete recovery bringing it back to the way i bought it but can not figure out how to do this. i did it once with dell but don't remember the steps. i already backed up my files. pls help very frustrated!!