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
How to test memory consistency after a laptop repair
Compare repeated browser RAM results after a laptop repair, spot meaningful changes, and know when to check the memory or contact the repair shop.
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Tests
How to check if a projector is mirrored or extended
Check projector mode in Windows or macOS, then confirm whether it mirrors your laptop or acts as a separate extended screen.
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Tests
Why a counterfeit drive can seem fast at first
A counterfeit USB drive can seem fast during a short copy, then slow down or lose files. Learn why early speed is misleading and how to check its real capacity.
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Tests
How to compare speaker rattle before and after rubber feet
Compare a speaker's bass rattle before and after adding rubber feet with the same sweep, volume, placement, and listening position for a fair check.
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Tests
Why a computer throttles during long video meetings
Learn how to spot heat-related throttling during long video meetings, separate it from connection problems, and reduce the workload on your computer.
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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.