Need Your PC’s Serial Number? Here’s a Quick Way to Find It

Akshata Shanbhag 06-11-2015

Your PC’s serial number, sometimes called service tag, is an important piece of info that you should keep handy, especially when you’re troubleshooting Windows 8 Crashing? How to Easily Troubleshoot Blue Screen & Other Issues Windows 8 isn't perfect. That said, most blue screens and application crashes aren't Windows' fault. Our tips will help you identify exactly what's wrong with your PC and fix it. Read More or calling up tech support. Here’s a one-step trick for finding it.


Launch the Command Prompt by pressing Windows Key + R to bring up the Run dialog, typing in cmd, and hitting Enter. (Or launch it using any other method you prefer.) Then, type in the following command and press Enter again:

wmic bios get serialnumber

This displays your computer’s serial number instantly. Note it down for future use. That’s all there is to it!

The command only works on Windows 7 through Windows 10 because these Windows versions have the WMIC utility built into them. If you want thorough information about every aspect of your PC, we recommend using Belarc Advisor Did You Get The PC You Ordered? Find Out With These System Information Tools [Windows] Have you recently purchased a PC? If yes, was it customized? By customized, I mean assembled by a local computer shop, or even just by someone you know who builds and sells computers. If you... Read More .


By the way, the serial number is also available on the hardware itself, but it’s usually located in a hard-to-access place, such as on the back of the CPU. Thanks to the WMIC method, you won’t ever have to crouch behind the computer table or open up the hardware. You can see it right on your screen at any time!

Have you had trouble in the past locating information related to your computer or any of its components? How did you work it out? Share your experience with us.

Image Credit: barcode icon by newer via Shutterstock

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  1. Anonymous
    November 8, 2015 at 10:44 am

    I always used Belarc for everything. Even for Product Keys. The output file can be found in the program files> belarc> tmp> it will be in the html format. I would save it in the cloud for future reference.

    • Akshata Shanbhag
      November 8, 2015 at 5:42 pm

      Thank you for pointing out that important piece of info about the output file, Pravin.

  2. Anonymous
    November 7, 2015 at 10:44 am

    for linux > dmidecode -s system-serial-number

    • Akshata Shanbhag
      November 8, 2015 at 5:33 pm

      Thank you for that Linux tip, Alex!

  3. Anonymous
    November 7, 2015 at 1:44 am

    I've always used Belarc Advisor. It's saved me for getting my software product keys too!

    • Akshata Shanbhag
      November 8, 2015 at 5:41 pm

      Belarc can really be a big help when you're looking for system information!

  4. Anonymous
    November 6, 2015 at 7:46 pm

    Dosnt work on my system either, I built it myself. Perhaps a foot note explaining that your tip only works on OEM systems might be a help....

    • Akshata Shanbhag
      November 8, 2015 at 5:35 pm

      You're right, Alan. This may not work on every system. There are those exceptions.

  5. Anonymous
    November 6, 2015 at 2:24 pm

    On my (Lenovo) laptop that command produces a different number to the serial number on the box label.

    In the Belarc Advisor report, the number produced by this WMIC command is listed as the "system serial number" while the one on the box label is listed as both "chassis serial number" and "main circuit board serial number".

    In case I ever need to contact service support it looks like it would be useful to have both serial numbers available, so thanks for the info.

    • Akshata Shanbhag
      November 8, 2015 at 5:37 pm

      That does sound confusing. I'm guessing the number on the CPU would match the "system serial number" produced by WMIC and Belarc.

  6. Anonymous
    November 6, 2015 at 2:07 pm

    Unfortunately, your shortcut method of finding my machine's serial number doesn't work on my PowerSpec i7 computer, running Win 8.1 Professional (X64). Fortunately, the manufacturer put a nifty sticker on the side panel of the computer.

    • Akshata Shanbhag
      November 8, 2015 at 5:39 pm

      Unfortunately, there *are* exceptions to where this command will work. In case it doesn't there's always the CPU sticker like you mentioned :)