There are several ways to get your computer name.
Most modern keyboards have a Windows button is generally located at the bottom left hand corner of your keyboard. Using that in combination with the Pause or Break key at the top right hand area of your keyboard will give you the system properties of the computer your using. You’ll hold the windows key, and tap the Pause/Break key.
You’ll then get a screen with various pieces of information. You’re looking for “Device Name” like the following:
If you Can’t seem to find the Windows or Pause/Break key, then you can use the following method.
With your mouse, click on your windows button at the bottom left of your screen. 
The start typing (without quotes) “cmd”. You should see an icon labeled Command Prompt 
Click on that, and you’ll get a black box where you’ll type the word (without quotes) “hostname”, then hit enter
