This is the process of restarting a computer. On most computer cases there is a restart button below the power button. Apart from this you can also restart a computer in Windows by pressing the Alt, Control and Delete keys simultaneously twice. The final way to restart a computer is by pressing the power button twice. The best way to restart a computer in Windows is by pressing the Alt, Control and Delete keys simultaneously twice, because this doesn't require the computer to go through Scandisk while booting up.