PC Serial number

Windows

1. Open the Command Prompt by pressing the Windows key on your keyboard, then pressing X.
2. A menu will appear. Select Command Prompt (Admin) on the menu.
   
3. Type wmic bios get serial number and then press Enter on your keyboard.
   
4. The serial number will be shown on the screen.
   

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Mac

1. Click the Apple logo on the top left corner. Select About This Mac.
2. The serial number will be shown on the screen
   

 

 

 Source:

https://isit.arts.ubc.ca/news/how-to-locate-your-computers-serial-number/