Blog
Tests
Guides for testing your keyboard, mouse, screen, sound, network and other hardware, and for fixing what the tests find.
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Tests
Why files disappear after copying to a USB drive
Find out why copied files vanish from a USB drive, check for fake capacity or file errors, and learn what to do before trusting it again.
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Tests
What charging rates reveal about a worn connector
Compare charging rates across cables and ports to spot clues of a worn connector, and learn how to separate a loose port from a weak charger.
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Tests
Laptop speakers sound distorted at high volume
Find out whether distortion comes from the audio, a setting, or failing laptop speakers, then test at safer levels and work through likely fixes.
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Tests
Door handle buzzing with music: what to inspect
Find the frequency that makes a door handle buzz, tell loose hardware from room vibration, and fix the rattle without risking the lock.
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Tests
Test Wi-Fi before installing a garage controller
Map Wi-Fi at the controller's exact mounting spot before installation, then learn whether weak coverage, interference or brief drops need fixing.
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Tests
Why microphone gain changes noise readings
Learn why a microphone gain change can raise or lower a Noise Meter reading even when room sound stays the same, and how to compare levels fairly.
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Tests
Touch input fails with cold fingers: what to try
Find out whether cold, dry fingers, gloves, a screen protector, or a touch screen fault is behind missed taps, then try these quick fixes.
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Tests
How to spot key chatter on a mechanical keyboard
Learn how to tell key chatter from normal key repeat, test one switch at a time, and narrow down whether the cause is the keyboard or a setting.
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Tests
Why software updates affect short CPU tasks
Learn why short CPU test results can change after a software update, how to compare runs fairly, and when a score shift may point to a real slowdown.
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Tests
How to test Enter and Escape before a presentation
Test Enter and Escape in your browser, then check the presentation app, keyboard connection, focus, and accessibility settings before you go live.
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Tests
How to check graphics slowdowns with multiple windows
Compare a browser graphics score with one window and several open, then check whether system load, power settings, or the GPU is slowing things down.
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Tests
How to verify a school-issued memory card's capacity
Learn how to safely test a school-issued SD card's real capacity, read the result, and tell a counterfeit card from a reader or permission problem.