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 compare an empty shelf with a loaded bookshelf
Compare a shelf with no books to a loaded bookshelf using the same bass sweep, then find whether books, loose items, or the shelf itself are rattling.
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Tests
How to check if mono audio is on
Check whether mono audio is enabled by comparing left and right speaker output, then find the setting on Windows, Mac, iPhone, or Android.
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Tests
Motion-controlled games tilt in the wrong direction
Find out whether the sensor, device orientation, or a game setting is causing inverted motion controls, then test the right fix.
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Tests
How to evaluate a quiet corner in an open-plan office
Compare office corners with consistent microphone readings, spot speech and equipment noise, and decide whether a seat is quiet enough for focused work.
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Tests
Why dark clothes change webcam brightness
Learn why dark clothes can make a webcam brighten or dim the whole image, how to test the effect, and which lighting or camera settings to change.
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Tests
Slow PC: is slow memory really the cause?
A slow PC does not always need faster RAM. Test memory speed, then check apps, storage, heat and other common causes before buying an upgrade.
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Tests
Smart home devices randomly disconnect: what to test
Find out whether smart devices are losing Wi-Fi, internet access, or power, then test the connection where dropouts happen and narrow down the cause.
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Tests
How to identify which monitor Windows is using
Find the screen Windows calls Display 1, match it to the physical monitor, and check its resolution and scale with a browser-based screen test.
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Tests
How to test online class lag under load
Check whether downloads or uploads disrupt your online class. Run a browser bufferbloat test, understand the result, and reduce lag during calls.
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Tests
Why a computer throttles even when the fan is spinning
A spinning fan doesn't guarantee good cooling. Test for heat-related slowdown, then check airflow, power limits, and the parts that may be overheating.
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Tests
How browser versions change canvas rendering
Learn why the same canvas can look different after a browser update, how to record the browser version, and how to separate rendering changes from app bugs.
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Tests
Why a bass sweep finds vibrating furniture
A slow bass sweep can expose furniture that buzzes only at certain pitches. Learn how to test safely, locate the source, and stop the rattle.