Well, get some thumbdrive and download the newest drivers on there, unpacked, just in case. Boot from the Win7 DVD and go through setup, then install drivers. If a certain driver should be needed during setup (shouldn't be the case) load it from the thumbdrive. Installing Win7 is not science. If you are solely dependent on the unit and don't have another PC to maybe google or anything, make a backup of your current system beforehand to an external drive.