Blog
Short, practical guides for checking your hardware and fixing what the tests find.
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Tests
How to test a used laptop before buying it
Run browser-based checks on a used laptop’s screen, keys, battery and performance, then spot warning signs before you hand over money.
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Tools
Make a QR code for Wi-Fi guests
Create a Wi-Fi QR code guests can scan to join your network, choose the right security type, and test it before you print or share it.
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Tests
Why does my laptop get slow when it gets hot?
Learn why heat can slow a laptop, how to check for thermal throttling with a browser test, and what to do before dust or a failing fan causes damage.
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Tests
Is my USB flash drive fake? How to check its real size
Check whether a USB flash drive is falsely reporting its capacity, verify how much data it can really store, and tell fake size from slow speed.
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Tests
Mouse double-clicks on a single click: how to fix it
If your mouse double-clicks when you press once, test whether the switch sends extra clicks, then adjust click speed, check the connection, or replace it.
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Tests
Only one side of my headphones works
Find out whether one headphone channel is silent, then check balance settings, the cable, Bluetooth, and the audio source to fix it.
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Tests
Laptop camera not working in Zoom or Teams
Test whether your laptop camera works outside Zoom or Teams, then fix the privacy, app, or device setting blocking your video.
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Tests
How to check a new monitor for dead pixels
Check every color and corner of a new monitor for dead or stuck pixels, then decide what to do before your return window closes.