The serial number of an HP laptop or Compaq laptop is a very important number. When the laptop needs service, it is the method the manufacturer uses to determine if it is still under warranty. It can also be the method used to authorize users to download specific software and updates for their laptop. The serial number is also necessary for finding replacement part when needed. For these reasons, it is important to know how to find your HP or Compaq laptop’s serial number and for when you need it most.

Here are a few of the methods you can use to find your laptop’s serial number.

The Manufacturer’s Label

Most HP and Compaq laptops have a label affixed to the bottom of the laptop itself which give the serial number. In many cases, there is also a separate label for your Windows activation code, which is not related. This sticker will usually list the product number or model number of your laptop, and have a 10-digit number labeled “Serial No.”. This is your serial number. It may be helpful to write this number down in a safe place in the event that your sticker is lost.

HP’s Website

If you are using the machine itself, you can go to HP’s support website to download a piece of software that will check your laptop’s serial number for you. Since HP has merged with Compaq, this will work for both HP and Compaq laptops.

Windows

You can usually check your laptop’s serial number within Windows. Right-click on My Computer and choose Properties. Under the “General” tab, you should see your serial number listed under “Support Information”.

Receipts

If none of these methods reveal your serial number, look on your original purchase receipts. In many cases, the serial number will be listed on the receipt itself.

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