How to Check Serial Number on Laptop: A Complete Guide

How to Check Serial Number on Laptop: A Complete Guide 

Learn how to check serial number on laptop across Windows, Mac, Dell, HP, Lenovo, and more. Quick methods to find warranty and device details.

Why You Should Know Your Laptop’s Serial Number

Your laptop’s serial number is more than just a string of digits. It’s a unique identifier that helps manufacturers, service centers, and even you keep track of your device. Whether you want to check your warranty, request support, or verify authenticity when buying second-hand, knowing how to check serial number on laptop is essential.

The good news? Finding it is easier than most people think, and you don’t need to be a tech expert to do it.

Different Ways to Check Serial Number on Laptop

There are several methods depending on whether your laptop is Windows, macOS, or from a specific manufacturer like Dell, HP, or Lenovo. Let’s break it down.

Method 1: Check the Serial Number Physically

Most laptops have the serial number printed somewhere on the device itself. Common locations include:

• On the bottom of the laptop (etched or on a sticker)
• Under the battery compartment (for laptops with removable batteries)
• On the original box or receipt of purchase

Method 2: How to Check Serial Number on Laptop in Windows

If you’re using a Windows laptop, you can quickly find your serial number with built-in commands.

1. Press Windows Key + S and type cmd.
2. Right-click on Command Prompt and select Run as administrator.
3. Type the following command and press Enter:

wmic bios get serialnumber

Your serial number will be displayed instantly.

Alternatively, you can also go to Settings > System > About to see your device details.

Method 3: How to Check Serial Number on MacBook

For Mac users, Apple provides a simple way to check your serial number:

1. Click the Apple logo in the top left corner.
2. Select About This Mac.
3. Your MacBook serial number will be displayed on the pop-up window.

You can also log into your Apple ID account to view registered devices and their serial numbers.

Method 4: Using Manufacturer Tools

Most major laptop brands provide online tools to check serial numbers and warranty status:

• Dell: Enter your serial (Service Tag) on Dell Support.
• HP: Use HP Support to check warranty by serial number.
• Lenovo: Visit Lenovo Warranty Lookup for details.
• Acer, Asus, Microsoft Surface: Each has dedicated support pages for serial verification.

These tools are especially useful for checking warranty coverage, repair eligibility, and authenticity.

Why Checking Your Laptop Serial Number Is Important

A serial number isn’t just a random code. It plays a vital role in:

• Warranty validation – Know if your laptop is still covered.
• Technical support – Service agents identify your model faster.
• Theft protection – Helps prove ownership if lost or stolen.
• Second-hand purchases – Confirms authenticity and service history.

Quick Tips for Keeping Your Serial Number Safe

• Write it down and keep it with your purchase receipt.
• Take a clear photo of the sticker for backup.
• Register your laptop with the manufacturer using your serial number.

By doing this, you’ll always have your laptop’s details handy when needed.

FAQs About Laptop Serial Numbers

Can I find my laptop serial number online?

Yes. If your device is registered with your Microsoft or Apple account, you can log in and find it under your devices.

Is it safe to share my serial number?

It’s safe with official manufacturer sites and support agents. However, avoid posting it publicly to reduce the risk of misuse.

What if the serial number is faded or missing?

Use software methods like Command Prompt (Windows) or About This Mac (Apple). You can also contact the manufacturer with proof of purchase.

Always Know Your Laptop’s Serial Number

Learning how to check serial number on laptop is simple yet crucial for warranty checks, technical support, and verifying device authenticity. Whether you’re on Windows, macOS, or using a brand-specific tool, you can find it in just a few minutes.

Don’t wait until you need repairs or warranty claims—take a moment today to check and record your laptop’s serial number.

 Visit your manufacturer’s official support page—whether Dell, HP, or Apple—and verify your warranty status now. Protect your investment and stay prepared.