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Free browser-based testing

Used Laptop Checkup

Follow a practical inspection checklist before buying or selling a second-hand laptop. Combine browser-based tests with the checks only a person can perform.

Runs locally • No account • Honest limitations

Run your test

Check a used laptop before buying with a free inspection checklist and links to camera, keyboard, microphone and screen tests.

Check each item after inspecting the device. This is a manual checklist: ticking a box means you confirmed it, not that DeviceDIY automatically tested it.

0/10Checks marked complete
0%Checklist progress
In progressInspection status

Start by checking the screen, keyboard and charging condition.

How to use this test

  1. Inspect the laptop in person and make sure you have permission to test it.
  2. Run the linked camera, microphone, screen, keyboard and speaker tools.
  3. Tick an item only after you personally verify it.
  4. Check charging, battery health, storage and ownership using operating-system tools and documents.
  5. Print or copy your checklist before making a purchasing decision.

What this can and cannot prove

The browser cannot determine whether a laptop is stolen, verify battery wear, certify internal components or guarantee long-term reliability. This checklist records what you inspected and is not a warranty or diagnostic certificate.

Compare results with your operating-system diagnostics or a second device when a fault is suspected.

Frequently asked questions

Can a website test every part of a used laptop?

No. Some checks require operating-system tools or physical inspection, and ownership cannot be verified from a webpage.

Is a completed checklist a certificate?

No. It only records checks that you personally marked as completed.

Can I save my checklist?

Yes. Use your browser print dialog to save a PDF or copy a short checklist summary locally.