Determine Dell Service Tag in Windows

This command will show you the serial number of your CPU of your computer.  

If your computer is a DELL, that is also known as the service tag.

1. Open up a PowerShell window.
   
   
2. Enter this command
   GWMI -Class Win32_Bios | select SerialNumber
   
   
3. Press Enter.

System will return with your Dell Service Tag.

You can then enter that into the Dell site to get further information about the system.