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 a monitor's pixel policy matters for a return
Check whether a dead or stuck pixel qualifies for a return, document it before trying a fix, and find the right policy deadline.
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Tests
Frame-rate problem or network lag? How to tell
Learn whether choppy video comes from your camera or a shaky connection, then check frame rate, network stability, and the settings most likely to help.
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Tests
How to spot a dirty webcam lens in a live preview
Use a live camera preview to tell whether haze, glare, or blur comes from a dirty webcam lens, then clean it safely and check again.
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Tests
How to compare two SD cards for photo transfers
Compare SD card read and write speeds fairly, then use the results to estimate which card will move photo files faster in your setup.
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Tests
How to test MIDI controller transport controls
Check whether your MIDI controller's play, stop, and record buttons send messages, then find out what to check if they do not.
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Tests
How to check speeds over a USB phone tether
Check download, upload, ping and jitter over a USB phone tether, then compare results to find whether the limit is cellular, cable or computer.
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Tests
Which browser tests help a freelance IT technician?
Use browser-based hardware checks to triage client complaints, verify repairs, and collect useful evidence without installing diagnostic software.
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Tests
Low memory copy score: what it means
Learn what a low RAM copy score means, how it differs from read and write results, and how to rerun the test fairly before troubleshooting.
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Tests
Why a pixel is always blue on a black screen
A blue dot on a black screen often points to a stuck subpixel. Test it across colors, rule out software, and decide whether repair is needed.
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Tests
How to check if your browser supports video export
Check your browser's codecs and features, then run a short export test to see whether your editor can save video in the format you need.
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Tests
MIDI notes keep sounding after a controller disconnects
Learn why a synth keeps playing after a MIDI controller disconnects, how to inspect note-off messages, and what to reset before reconnecting.
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Tests
Microphone hum near a charger: what to check
Find out whether a charger is causing microphone hum, separate room noise from electrical interference, and try safe fixes before replacing your mic.