If you have a Dell PC, every now and then when it's time to upgrade your going to need the service code or service tag number. Here is where you should find it so that you can upgrade your computer.
Another way to get the service tag is via cmd prompt and typing in wmic bios.
For more information see Link
Or better yet use a third party software to get your service tag from the express code given Link
Another way to get the service tag is via cmd prompt and typing in wmic bios.
For more information see Link
Or better yet use a third party software to get your service tag from the express code given Link