How to Check Your Computer’s Serial Number via Command Line
Finding your computer’s serial number from the command line is useful for warranty claims, support, or asset tracking, without needing to check a physical label. Windows 11 can retrieve the serial number stored in the system firmware.
The Command
wmic bios get serialnumber
What It Does
This queries the BIOS information and returns the serial number recorded by the manufacturer in the firmware. The result is the serial number identifying your specific machine, the same one typically found on a sticker or in YYGACOR Resmi warranty records. This is convenient when the physical label is worn, hidden, or inaccessible.
When You’d Use This
This is convenient when you need your PC’s serial number for a warranty claim, support request, or asset tracking, but the physical label is worn, hidden, or hard to reach. Retrieving it by command is quicker than locating a sticker, especially on laptops where the label is often on the underside or inside a battery compartment.
Useful Variations
In PowerShell, `Get-CimInstance Win32_BIOS | Select-Object SerialNumber` retrieves the same value, which is preferable since `wmic` is older. For the overall system’s serial via the baseboard or system product, `Get-CimInstance Win32_ComputerSystemProduct | Select-Object IdentifyingNumber` may also show a relevant identifier depending on the manufacturer.
If It Doesn’t Work
If the result is blank, a placeholder, or a generic value, the manufacturer may not have set a serial number in the firmware, which is common on custom-built PCs. For brand-name machines, the serial is usually present and matches warranty records. If the firmware value is missing, the physical label remains the fallback, or the manufacturer’s support tools may retrieve it another way.
Good to Know
Some systems, particularly custom-built PCs, may show a blank, placeholder, or generic value if the manufacturer did not set a serial number in the firmware. For brand-name laptops and desktops, the serial number is usually present and matches the manufacturer’s records for warranty and support purposes.
Putting It Together
Once you have run it once or twice, this becomes second nature. As part of gathering facts about your hardware and Windows setup, this command saves you from digging through settings screens. Together with the others in this area, it lets you document a system’s full configuration or answer a specific specification question in seconds from the terminal. Like anything in the terminal, the real value comes from trying it on your own system and adapting the variations above to what you actually need, so it is worth experimenting with in a safe, low-stakes situation before relying on it in a script or during troubleshooting. Keeping a note of the commands you find most useful, along with the variations that fit your workflow, turns scattered one-off tricks into a personal reference you can draw on whenever a similar task comes up again.