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 check a classroom computer lab efficiently
Use one repeatable pass to check keyboards, screens, cameras, audio, and network across a classroom lab, then sort faults by what needs attention first.
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Tests
Mouse switch or software macro? How to tell
Find out whether unexpected or repeated mouse clicks come from a worn switch or a software macro, then test the mouse and isolate the cause.
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Tests
Camera preview not working after a browser update?
Check whether your camera preview still works after a browser update, then isolate permission, camera selection, and compatibility problems.
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Tests
How to test loaded delay on 4G and 5G
Measure how much 4G or 5G latency rises during downloads and uploads, understand the Bufferbloat grade, and find the next thing to check.
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Tests
Mouse buttons work but drag-and-drop fails
Find out whether failed drag-and-drop comes from the mouse, a system setting, or one app, then try the right fix without replacing working hardware.
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Tests
What a browser's GPU renderer label means
Learn what a browser's GPU renderer label identifies, why it may show a generic name, and how to check whether your graphics hardware is being used.
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Tests
Why a tablet reports sideways orientation on a stand
Learn why a tablet can report sideways orientation on a stand, how to check its sensors in your browser, and when rotation settings are the cause.
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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.