There a few ways to get the serial number of a computer:
1. In the case of laptops, you will usually find the serial number on a back-label.
2. You can see it in BIOS (basic input/output system)
3. You can get it from Windows OS.
How to get the Serial Number in Windows:
1. Right-click on the Start button and click on the Windows PowerShell entry (or Command Prompt if you are using an older version of Windows).
The Windows PowerShell window will open:
2. Here you can use two commands. The first one will work both on Command Prompt and on PowerShell:
wmic bios get serialnumber
C:\Users\PH>wmic bios get serialnumber
SerialNumber
9E195841H
C:\Users\PH>
The second command will work only on PowerShell:
Get-WmiObject win32_bios | Format-List SerialNumber
PS C:\Users\PH> Get-WmiObject win32_bios | Format-List SerialNumber
SerialNumber : 9E195841H
PS C:\Users\PH>