Locate your computer's service tag (also referenced as the serial number) using Command Prompt.
Laptops and Desktops
- Type cmd in the Windows search bar at the bottom-left of the screen, then select Command Prompt from the list of results.
- In the Command Prompt window, type
wmic bios get serialnumber
and press Enter.
- The Service Tag (Serial Number) appears as shown in the image below.

Figure 1: (English Only) Service Tag (Serial Number) in Command Prompt on Notebook and Desktop
Tablets
- On the Windows Tile Screen, swipe up from the bottom and tap All Apps.
- Scroll to the right until you get to Command Prompt.
- In the Command Prompt window, use the on-screen keyboard to type
wmic bios get serialnumber
and press Enter.
- The Service Tag (Serial Number) appears as shown in the image below.

Figure 2: (English Only) Service Tag (Serial Number) in Command Prompt of tablet
Out of warranty? No problem. Browse to the Dell.com/support website and enter your Dell Service Tag and view our offers.
NOTE: Offers are only available for US, Canada, UK, France, Germany, China, and Japan personal computer customers. Server and Storage not applicable.
More References
Follow the link below for additional instructions on how to find your Dell Service Tag depending on the Dell computer or product you own: