What to Know

• Enter this command into Command Prompt:wmic bios get serialnumber. The serial number shows up instantly.
• Alternatively, you can find the serial number if you look on the underside of the laptop.
• Some other ways include checking the purchase receiptorwarranty details.

This article explains how to find the serial number of a Windows 10 or Windows 11 laptop, and why you might need to.

How to Get the Laptop Serial Numberin Command Prompt

One of the simplest ways to find your serial number is by entering a command into Command Prompt. This will display the serial number in a fraction of a second, and it's easy to copy it if you need to.

1. Open Command Prompt. One easy way to do this is to search forcmdfrom the taskbar.

   

2. Type this into Command Prompt, and then pressEnter:

    wmic bios get serialnumber

   

3. Your serial number should be displayed. Highlight it and then right-click if you need to copy it.

Physically Find the Serial Number

If your laptop won't boot up or you don't feel comfortable using the command line, turn your laptop over and look forS/N or Serial Number followed by a string of letters and numbers on the label. You might also find it on the box your laptop came in.

Other Places to Look

If you registered your laptop with the manufacturer, your serial number should be included in the registration documentation, warranty service receipt, or email confirmation. You might also find it on the purchase receipt.

What Is a Laptop Serial Number? 

A laptop serial number is a unique string of numbers and letters assigned to your laptop. No two laptops have the same serial number.

Why You Might Need Your Laptop Serial Number

As mentioned previously, a laptop serial number is useful for warranty claims and insurance issues. It also helps technical support identify when your laptop was manufactured and explain what specific hardware it's running.

So, it's useful in many situations-for example, when:

• You must prove your laptop's authenticity to a buyer.
• The manufacturer's technical or customer support person must identify its specific model, specifications, and/or warranty details.
• The laptop has been stolen and an insurance claim submitted.
• A technician must specify compatible parts for upgrades or repairs.
  

FAQ

• How can I find my HP laptop serial number?

  First, check the underside or back edges of the laptop. Next, if you have a laptop with a removable battery, look inside the battery compartment. Finally, for a detachable laptop, remove the tablet from the dock to reveal the serial number.

• How can I find my Dell laptop serial number?

  Although you can use Windows commands to find the serial number, you can also find it on the Service Tag of a Dell laptop. The Service Tag is located on the bottom panel.

• How do I find the serial number on my Toshiba laptop?

  The serial number can be found as a printed sticker or laser etching on the bottom case of a Toshiba laptop.

• How do I find the serial number on my Lenovo laptop?

  On a Lenovo laptop, the serial number is on the bottom of the system. Alternatively, you can go to the Lenovo Support website, selectDetect Product, and install Lenovo Service Bridge. After installation, Lenovo Service Bridge will open a product page with your laptop's information, including the serial number.