Then you need to recover it to the OEM state. Do you have media to do that? Each computer maker has a way to recover it. Some use dvd's and others use an F key at boot. Some make you create disks of your own and some make you buy them.
Do you want to completely erase the drive & install Windows from scratch? That means you will lose all your files & programs. Make sure you have all the necessary device drivers & programs to reinstall before you get started.
The information on Computing.Net is the opinions of its users. Such
opinions may not be accurate and they are to be used at your own risk.
Computing.Net cannot verify the validity of the statements made on this
site. Computing.Net and Purch hereby disclaim all responsibility
and liability for the content of Computing.Net and its accuracy.