Lenovo serial lookup: how to find your device number

To find a Lenovo serial number, run Get-CimInstance -ClassName Win32_BIOS | Select-Object SerialNumber in PowerShell, or read the S/N value on the label under the laptop or on the back of the desktop.

This guide covers seven ways to find the number on Windows, in BIOS, on a Chromebook and in Linux, plus how to use it for a Lenovo warranty lookup and what to do when the number is blank.

The fastest way to find a Lenovo serial number in Windows

This command reads the serial number the firmware stores, so it works even when the label has worn off. It needs no admin rights and no extra software.

1. Right-click Start and select Terminal or Windows PowerShell.
2. Type Get-CimInstance -ClassName Win32_BIOS | Select-Object SerialNumber and press Enter.
3. Copy the value under SerialNumber. That string is your Lenovo serial number.

Paste the number straight into a support form instead of retyping it. Letters such as O and I are easy to confuse with 0 and 1.

What you are looking for

Lenovo devices carry several identifiers, and support forms ask for different ones. The serial number is the one that identifies your exact unit.

Identifier	What it identifies	Where it is used
Serial number (S/N)	One specific device; Lenovo assigns it at production and it cannot be changed	Warranty lookup, repairs, support cases, insurance and theft reports
Model number or machine type	The product line and configuration, shared by many identical units	Finding drivers, specifications and compatible parts
Product name	The marketing name, such as a ThinkPad or IdeaPad series	Shopping and general searches; too broad for support

No two Lenovo devices share a serial number, so it is the safest value to give support. Keep it private, because someone holding it could try to claim warranty service on your device.

Which Lenovo serial lookup method should you use?

Your situation	Use this	Why
Windows starts and you can type a command	PowerShell (Method 3)	Works on every current Windows build, including those without WMIC
Lenovo Vantage is already installed	Lenovo Vantage (Method 1)	Shows the number next to your warranty details with no typing
Older Windows 10 or Windows 11 install	Command Prompt (Method 2)	The short wmic command still runs where WMIC is present
Windows will not start	BIOS or UEFI (Method 4) or the label (Method 5)	Neither needs a working operating system
Device is a Chromebook	Sign-in screen or label (Method 6)	ChromeOS has no PowerShell or Command Prompt
Device runs Linux	dmidecode (Method 7)	Reads the same firmware table Windows uses

Method 1: Check Lenovo Vantage in Windows

Lenovo Vantage is Lenovo's own Windows app for updates, settings and device support. Lenovo distributes it through the Microsoft Store, and many Lenovo PCs ship with it installed. If yours does not have it, you can download Lenovo Vantage for Windows first.

1. Select Start, type Vantage and open Lenovo Vantage.
2. If the app is missing, open Microsoft Store, search for Lenovo Vantage and select Get or Install.
3. Open the app's device details page for this PC.
4. Read the serial number listed beside the machine type and warranty status.
5. Select and copy the number, or write it down exactly as shown.

Legion gaming PCs use Lenovo Vantage for Gaming, a separate Microsoft Store app. If neither app is installed, the commands below give the same answer without installing anything.

Method 2: Use Command Prompt to get the serial number

The classic one-line command relies on WMIC, the WMI command-line tool. Microsoft deprecated WMIC in Windows 10, version 21H1, and new installs of Windows 11, versions 24H2 and 25H2 no longer include it.

Starting in August 2026, WMIC cannot be added back on Windows 11 24H2 or 25H2 as a Feature on Demand. Open Command Prompt and use this command on older installs that still have it.

wmic bios get serialnumber

Asks WMI for the BIOS record and prints only its SerialNumber property.

You should see: A SerialNumber heading followed by one line holding your Lenovo serial number.

If Command Prompt replies that wmic is not recognized, run the PowerShell query from the same window instead: powershell -NoProfile -Command "(Get-CimInstance -ClassName Win32_BIOS).SerialNumber".

Method 3: Use PowerShell when WMIC is unavailable

Microsoft names Windows PowerShell as the replacement for WMIC. Removing WMIC does not affect WMI itself, so the same serial number is still available through the Get-CimInstance cmdlet.

Get-CimInstance -ClassName Win32_BIOS | Select-Object SerialNumber

Reads the Win32_BIOS class from local WMI and shows only its SerialNumber property. gcim is a built-in short alias for Get-CimInstance.

You should see: A SerialNumber column with one value under it, the same string printed on the device label.

To copy the number without the heading, run (Get-CimInstance -ClassName Win32_BIOS).SerialNumber | Set-Clipboard and paste it where you need it.

Add -ComputerName PC01 (with your own computer name) to read the serial number of another PC on your network, if remote management is enabled on it.

Method 4: Find it in BIOS or UEFI

The serial number lives in the system firmware, so the BIOS or UEFI setup screen shows it even when Windows will not load. Start from Windows if it still boots; otherwise use the firmware key shown on the Lenovo logo screen at power-on.

1. Open Settings and go to System > Recovery. On Windows 10, go to Update & Security > Recovery.
2. Next to Advanced startup, select Restart now.
3. In the blue recovery menu, select Troubleshoot > Advanced options > UEFI Firmware Settings.
4. Select Restart. The PC opens the firmware setup screen.
5. Read the serial number on the main or information page, where it sits beside the machine type and BIOS version.
6. Exit without saving changes so no firmware setting is altered.

Method 5: Read the label on the device

Lenovo prints the serial number on a sticker, usually marked S/N. This is the only method that works on a device that will not power on.

1. Shut the device down and unplug the power adapter.
2. On a laptop, close the lid, turn it over and look for the label on the bottom cover.
3. On an older laptop with a removable battery, take the battery out and check the battery bay.
4. On a desktop or all-in-one, check the back or side of the case or the stand.
5. Find the value next to S/N and copy every character, then photograph the label as a backup.

The original box and the purchase invoice often carry the same serial number. Check them if the sticker is scratched or missing.

Method 6: Find the serial number on a Lenovo Chromebook

ChromeOS has no command prompt for this job, but Google documents a shortcut on the sign-in screen. On school or work Chromebooks, the administrator can also see every serial number in the Google Admin console.

1. Turn on the Chromebook and stay on the sign-in screen.
2. Press Alt + V before signing in.
3. Read the serial number that appears on the screen.
4. If nothing appears, turn the Chromebook over and read the S/N label on the bottom cover.
5. For a managed device, ask your administrator to check Devices > Chrome > Devices in the Admin console.

Method 7: Find it in Linux

Linux reads the serial number from the same DMI (SMBIOS) table that Windows queries. The dmidecode tool prints a single value when you pass it a keyword.

sudo dmidecode -s system-serial-number

The -s switch prints only the DMI string named by the keyword; system-serial-number is the device serial. Enter your password when sudo asks for it.

You should see: One line holding the serial number, with no other output.

Use sudo dmidecode -s system-product-name to print the model identifier as well. The same strings are also exposed as files under /sys/devices/virtual/dmi/id.

Use the serial number for Lenovo warranty lookup

Entering the serial number on Lenovo's support site to check your Lenovo warranty status is also the best check that you copied it correctly. A correct number returns your exact model and warranty dates.

1. Open Lenovo's warranty lookup page at pcsupport.lenovo.com/us/en/warrantylookup in your browser.
2. Paste the serial number into the search box and submit it.
3. Confirm the product name and machine type shown match your device.
4. Read the warranty status and end date, and note any extra coverage listed.
5. Use the same product page to find drivers, manuals and repair options for that exact model.

If the page shows a different product, the serial number was mistyped or the firmware value is wrong. Compare it with the label before contacting support.

When the reported number is missing or incorrect

Command Prompt says wmic is not recognized

WMIC is removed from new installs of Windows 11, versions 24H2 and 25H2.

1. Open PowerShell instead of Command Prompt.
2. Run Get-CimInstance -ClassName Win32_BIOS | Select-Object SerialNumber.
3. Copy the value under SerialNumber.

The command returns a blank or placeholder serial number

Every software method reads the firmware table, and that table is not always complete or reliable.

1. Check the S/N label on the device, which is printed at the factory.
2. Compare it with the serial number in the BIOS or UEFI setup screen.
3. If both firmware sources are blank, contact Lenovo support with the label number and your proof of purchase.

Windows will not boot

PowerShell, Command Prompt and Vantage all need a running copy of Windows.

1. Power on the device and open the firmware setup screen from the Lenovo logo screen.
2. Read the serial number on the information page.
3. If the device does not power on at all, read the S/N label instead.

The label is worn off or missing

Stickers wear with handling, and some get removed during repairs.

1. Read the number from Windows, BIOS, ChromeOS or Linux using the methods above.
2. Check the original box and the purchase invoice for the same serial number.
3. Save the number in a password manager or a note so you do not need the label again.

Warranty lookup shows the wrong product

A character was mistyped, or the firmware value does not match the label.

1. Copy the number from PowerShell instead of retyping it.
2. Check for confusable characters such as 0 and O, or 1 and I.
3. If the firmware and label still differ, give Lenovo support both numbers.

Lenovo serial lookup FAQ

How do I find a Lenovo serial number?

Run Get-CimInstance -ClassName Win32_BIOS | Select-Object SerialNumber in PowerShell on Windows. You can also read the S/N label under a laptop or on the back of a desktop, check Lenovo Vantage, or open the BIOS setup screen.

Is the Lenovo serial number the same as the model number?

No. The serial number identifies one specific device and is unique to it. The model number or machine type identifies a product line and configuration that many identical units share, which makes it useful for drivers but not for warranty claims.

What is the fastest way to check a Lenovo serial number?

On a working Windows PC, one PowerShell command is fastest: Get-CimInstance -ClassName Win32_BIOS | Select-Object SerialNumber. It reads the value straight from firmware and needs no admin rights or extra software.

Can I find the serial number if Windows will not boot?

Yes. Open the BIOS or UEFI setup screen at power-on and read the serial number on its information page. If the device does not power on at all, read the S/N label on the bottom or back of the case.

Why does WMIC say it is not recognized?

WMIC is no longer included in new installs of Windows 11, versions 24H2 and 25H2, and from August 2026 it cannot be added back. Run the PowerShell command Get-CimInstance -ClassName Win32_BIOS | Select-Object SerialNumber instead; it returns the same value.

Where is the serial number on a Lenovo Chromebook?

Press Alt + V on the Chromebook sign-in screen to show the serial number before you sign in. It is also printed on the S/N label on the bottom cover, and administrators can see it in the Google Admin console.

Can Lenovo identify my device without its serial number?

Only with difficulty. Without the serial number, Lenovo support may ask for proof of purchase or other identifying details before it can confirm warranty or offer repairs, so read the number from firmware or the label first.

Can I look up Lenovo specs by serial number?

Yes. Entering the serial number on Lenovo's support site returns the exact product and machine type. Use that product name and machine type to find the matching specifications, drivers and manuals.

Can I change a Lenovo serial number?

No. Lenovo assigns the serial number during production and it stays tied to that device. If firmware reports a wrong or blank value after a repair, contact Lenovo support rather than trying to edit it yourself.

The bottom line: best way to find a Lenovo serial number

Use the PowerShell command on any working Windows PC, and fall back to the BIOS screen or the S/N label when Windows will not start. PowerShell works on every current Windows build, including those where WMIC is gone, and it copies the exact firmware value without typing errors. The label and firmware screen cover the cases where no operating system is available.