Quick Tip : Restart Windows when mouse dies.

Suppose for some odd reason your mouse stops working or freezes on your screen. How the heck do you restart or shutdown your computer without your mouse? Here's one trick I discovered on how to restart or shutdown your computer with your keyboard.

1. Press the Windows key ( the one with the Windows logo on it) which will pop up the Start menu. You can also press Ctrl+Esc keys should your keyboard lack the Windows key.
2. Press U which enable you to select Shutdown/Restart etc..
3. You can use your arrow keys to make your selection.
4. Press Enter

I just thought this would be a handy tip.

-Source - Troubleshooting your PC for Dummies by Dan Gookin