And easy and quick way to Shutdown a Windows Computer is offered by Shutdown Timer. Brute and Normal Shutdown of a Windows Computer after scheduled number of minutes is supported by the Shutdown Timer Software which is totally free to download and try.
Shutdown Timer
Once you schedule the Shutdown Timer to Shutdown a Windows PC, it sits as an Icon in System Tray from which you can abort the Shutdown or make changes to the scheduled shutdown. The given below video tutorial displays how you can install the Shutdown Timer and use it shutdown windoes easy to follow steps.