Hardware diagnostics that
don't lie
Free online hardware tests for your laptop or PC — keyboard, screen, dead pixels, webcam, mic, and more. No download. Clearly labeled real measurements vs. estimates.
Display — Dead Pixels & Backlight
Look at each color carefully...
Checklist Complete
Here's your diagnostic summary
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23 Diagnostic Tests
Every tool runs entirely in your browser — no installs, no data leaves your machine.
Cycle solid colors to find dead, stuck, and hot pixels.
Uniformity, backlight bleed, color banding, and sharpness checks.
Measure your display refresh rate and rendered frame rate.
Check for motion blur, ghosting, and response-time artifacts.
Check your display color depth, gamut, and HDR support.
See every key register in real time. Spot dead, sticky, or ghosting keys.
Check clicks, scroll, movement, and double-click misfires.
Measure your mouse polling rate estimated DPI sensitivity.
Know exactly what you're buying
Buying a used laptop is a gamble — unless you test it first. TestMyLaptop runs every critical hardware check in your browser, guides you step by step, and produces a clear PDF report you can use to negotiate or walk away. No downloads, no sign-ups, no tricks.
How It Works
Open a test
No app store, no installer — every tool runs right in your browser tab.
Follow the steps
Clear instructions guide you through each check. Real measurements and estimates are clearly labeled.
Get your report
Download a PDF summary of what passed, what needs attention, and any notes you added.
How to Test a Laptop Online with TestMyLaptop
TestMyLaptop is the most thorough browser-based diagnostic suite available. Every test is clearly labeled as a real measurement or an estimate, so you know exactly what you're looking at. Run the full checklist in under 20 minutes and get a printable PDF report with all findings and your notes.
Blog
Plain-English guides to diagnosing and fixing common hardware problems.
2026-06-23
Dead Pixels vs. Stuck Pixels: Differences, Causes, and Fixes
A bright speck on your screen could be a dead pixel or a stuck pixel. They look similar but one is often fixable.
2026-06-23
The Evolution of DDR Memory: From DDR to DDR5
Each generation of DDR RAM doubled bandwidth and cut power. Here is how they compare and what it means for your build.
2026-06-23
How to Fix Stick Drift (PS5 & Xbox)
Stick drift makes games unplayable — your character moves on their own. Here is how to test, calibrate, and fix it.
2026-06-23
Fix Your Slow PC & Speed Up Boot Times
If your PC takes minutes to wake up or load, the bottleneck is almost always storage. Here is how to find and fix it.
2026-06-23
FPS vs. Hertz (Hz): What Is the Difference?
FPS comes from your graphics card. Hertz comes from your monitor. They need to match for smooth motion.
2026-06-23
Keyboard Ghosting vs. NKRO: What Those Labels Actually Mean
Anti-ghosting and N-Key Rollover are real features, but marketing blurs the difference. Here is what they do.
Your data never leaves this device
All tests run entirely in your browser. No server uploads, no account required, no tracking. The PDF report is generated locally — nothing is sent anywhere. We don't collect, store, or even see your diagnostic results.
No data collection
Zero analytics, zero cookies, zero tracking. Everything runs client-side.
Local reports
PDF reports are generated right in your browser tab — no server touch.
No sign-up
Just open the tool and start testing. No email, no password, no paywall.
Ready to Test Your Laptop?
Run the full diagnostic checklist right now — it takes 15-20 minutes and could save you hundreds on a bad purchase.
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