If your Windows 10 PC is running slowly or acting abnormally, one of the surest ways to fix this problem is to do a factory reset. This is also recommended if you sell your computer. This is how you do it.
Before you begin the factory reset process, make sure to back up your files. If not, some important data might be lost.
When you are ready to reset your Windows 10 PC from the factory, open the Windows Settings menu by clicking the Start button and then selecting the Gear icon.
Save my files: This option will save all your personal files when removing installed applications and system settings.
Delete everything: This will completely erase your Windows 10 PC.
Choose the option that suits you best.
When you are ready, select the “Reset” button.