Wiping a computer means removing everything–operating system, programs, and files–from the hard drive. To figure out how to wipe a computer, first determine what the hard disk is going to be used for after it’s erased and find out why it’s being wiped. If the hard drive is going to be discarded and you just don’t want anyone to access the data on it, an easy way to wipe it is simply to remove it from the computer and smash it or drill several holes through it. If the drive is going to be used again for a fresh Windows installation, the Windows installation program provides tools to wipe it and prepare for a new install.
Click next, and follow the prompts to the next screen. Choose the option to delete the partition.