How to Find My Laptop Serial Number

Useful for identifying and warranty claims

What to Know

  • On Windows 10, type "wmic bios get serialnumber" into the command prompt to view the serial number.
  • Look underneath your laptop to find a label showing the serial number.
  • Serial numbers can also be included on the manufacturer receipt or warranty notice.

This article teaches you how to find your Windows-based laptop serial number through multiple different methods. It also explains why it's important to know your laptop serial number. 

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 so consider this a guaranteed way of proving your laptop is the laptop you say it is. 

The laptop serial number is a method for manufacturers to be able to identify the specific model and specification of the computer, as well as be able to determine if any warranty remains. A serial number can also be used in the case of some insurance claims. 

How Do I Find the Serial Number on My Laptop Windows 10?

One of the simplest ways to find your serial number is by typing in a few commands on your laptop. Within moments, you can view your serial number and choose to copy it into a different document. Here's where to look.

This requires your laptop to be in working order and operational.

  1. On your laptop, type cmd into the Windows 10 search bar.

    Windows 10 desktop with Search bar highlighted
  2. In the command prompt, type "wmic bios get serialnumber"

    Windows 10 command prompt with command for finding serial number entered
  3. Press enter.

  4. Your serial number will now appear after the prompt.

How Do I Physically Find the Serial Number on My Laptop? 

If your laptop won't boot up or you don't feel comfortable entering commands into the command prompt, there is an alternative. Most laptops also contain the serial number on a label underneath the laptop. Here's where to look.

  1. Unplug your laptop from any power source.

  2. Flip it upside down.

  3. Look for a label on the bottom of your laptop. 

    Some laptops contain this label inside the battery compartment, providing your laptop has a removable battery.

  4. Look at the string of numbers and figures listed and seek out anything beginning with S/N or Serial Number. This is your laptop's serial number.

Where Else Can I Find My Laptop Serial Number?

If your laptop isn't operational and the label has worn off or become too faded, there is one final method that can help. If you registered your PC with the manufacturer, your serial number should be included in the registration documentation, warranty service receipt, or email confirmation. Then, it's time to start digging out the receipts. 

Why Do I Need My 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.

If you contact customer support to resolve a problem, they will ask for the serial number to check warranty status and other details. 

  • 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. Alternatively, you can also download and run the Toshiba Product Information utility to retrieve your serial number.

  • 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, select Detect 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.

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