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
Speaker sounds fine quietly but buzzes when loud
Find out whether loud-volume buzzing comes from the audio source, a loose object, or a damaged speaker, then test it safely and choose the next fix.
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Tests
Browser game rotation controls not working? How to fix
Find out whether your phone's motion sensors, browser permissions, screen rotation lock, or the game itself is stopping tilt controls from working.
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Tests
How to check if a screen protector lifts at the edges
Check whether a screen protector is lifting, tell edge adhesive trouble from a screen fault, and test touch response before deciding what to do.
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Tests
VPN changes loaded latency readings: what to check
Learn why a VPN can change loaded latency and Bufferbloat Test grades, how to compare results fairly, and what to adjust before blaming your internet.
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Tests
How to check system data after connecting a dock
Compare system details before and after connecting a dock. Check display, graphics, battery, and network changes, and learn what a browser report cannot confirm.
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Tests
How to verify a pixel flaw on a second video input
Compare the same screen defect across two monitor inputs to tell whether it stays with the panel or follows a cable, port, or video source.
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Tests
Why system info differs in private browsing mode
See why System Info can show different device details in a private window, what those differences mean, and how to compare results fairly.
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Tests
Keyboard matrix fault: signs and how to test
Learn the patterns that point to a keyboard matrix fault, test key groups in your browser, and separate hardware trouble from settings or rollover limits.
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Tests
Wi-Fi response time spikes near the microwave
Measure Wi-Fi response time with the microwave off and on, then tell interference from router, internet, or device problems.
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Tests
Why your browser reports the wrong amount of memory
Learn why a browser's memory figure can differ from installed RAM, what the rounded estimate means, and where to check the exact capacity.
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Tests
Why a controller sends messages on unexpected channels
See why a MIDI controller sends notes, knobs, or pedals on unexpected channels, test incoming messages in your browser, and find what to change.
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Tests
Memory bandwidth vs. capacity: what's the difference?
Learn what memory bandwidth and RAM capacity measure, test memory speed in your browser, and check how much memory your computer has.