Find Serial Number of your Desktop or Laptop Easily

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When ever you get problem with your desktop or laptop you need to call the customer care to resolve it and in turn you need to provide the serial number of your system, without the serial number of your system the customer care person will not even register your problem. If you are using desktop you can easily find the serial number at the back side of the system and if you are using laptop you can find the serial number at the base of the laptop with a sticker with serial number and barcode.


                         serial number

But imagine the situation if the serial number sticker has been removed or the data has been wiped out, what will you do. Don’t worry there is an alternative way to find out the serial number of your PC or laptop easily. I am explaining here for Windows based system and Linux based system. 

How to Find Serial Number of Desktop or Laptop (For Windows  system)

Open the command prompt (Go to start and type cmd). In the command prompt type the below command and press enter.

wmic bios get serialnumber



The above command works fine with Windows XP,Vista,Windows-7.


How to Find Serial Number of Desktop or Laptop (For Linux system)

Open the shell prompt and execute the below command as a root user and in the output you can see the serial number with some other information.

hdparm -i /dev/hda

 The above commands should work with all kind of hardware.


+Ayodhyanath Guru holds a B.Tech degree in Electrical Engineering and has worked with various prestigious clients in the IT industry and presently working as a Software Engineer. He is a part time blogger and presently authors the Jafaloo.Com blog. Being a tech enthusiast Guru likes to surf the web and blogs about interesting technical topics like How-To guides, freewares, Tutorials, Software, Gadgets, web applications etc. Apart from blogging he likes coding in Java/J2EE and PHP.

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7 Responses

  1. AleKo says:

    the command for linux gives you information about the harddrive installed, in your case it supposed to be IDE drive, which is often not the case for notebooks, where this is SATA devices, so the command has to be in this case hdparam -i /dev/sda
    For the system serial it is dmidecode -s system-serial-number (see here:

    • Guru says:

      Thanks Aleko for providing such a valuable information, I hope it would be helpful for all.

  2. Cyrill John M says:

    The above process is giving only one S.No.12345678901234567 for any laptop. This is becoming a common number. Therefore I request you to give some other alternative procedure to identify the CORRECT number.

  3. Forrest M says:

    I would like to point out the wmic and dmidecode commands will give you the CORRECT number as long as the OEM or end-user typed the S/N into the BIOS. If not there is no way to retrieve this information short of looking at the sticker.

  4. malik showkat says:

    i have lost my two laptops brand name is toshiba and i want to find any solution

  5. John Trollston says:

    I’m trying to do this with bandicam but it seems as if I only have 10 numbers.
    I have the right email.

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