An On-Screen Keyboard in Windows.
In case your keyboard or some keys stop working, Microsoft provides you with an alternative way to type-in using the mouse.
To work this tool,
Go to: 'Start menu'
Select: 'Run'
Type in: 'OSK'
Press: 'OK'
A keyboard will be displayed on your monitor which you can use with your mouse.
JUST TRY IT YOURSELF.