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A factory reset will wipe and erase all files from your computer. " " " Your Windows 7 computer will take at least five minutes to perform the factory reset, and prompt you to restart when complete.
Back up and save all your personal files to an external storage device or cloud storage system. Power off your computer, and disconnect external devices such as the printer and any USB flash drives. Power on your computer, and press F8 repeatedly to access the "Advanced Boot Options" menu. Select "Repair Your Computer" using the arrow keys on your keyboard, then press "Enter. Select your preferred keyboard layout on the System Recovery Options screen, then select "Next. Log in as the administrator, or as a local user. Place a checkmark next to "Yes, reformat hard drive and restore system software to factory condition," then click on "Next.