I just went from XP to a new Dell Windows 7. I have a multi-function printer that used CD drivers on XP, but with Windows 7, I had to install the printer with Windows Update and a scan utility from the manufacturer's web site. All of a sudden after a month, I can't scan, so I want to uninstall/reinstall the printer. How do I do this when it was installed with Windows Update? I see a list of drivers in the DriverStore/FileRepository folder. Do I delete those so Windows Update can reinstall them, or were they already there when I bought the computer?