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
Blurry apps on mixed-DPI screens: how to check
Check each display's resolution and scale, pinpoint why one app looks blurry on a mixed-DPI setup, and adjust Windows or macOS settings.
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Tests
How to test echo cancellation before a video call
Check whether echo cancellation reduces speaker sound in your microphone before a call, then confirm the setting in your meeting app.
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Tests
What two simultaneous touches reveal about your screen
Use two fingers to check whether your touchscreen tracks both at once, spot missed areas, and separate a screen fault from a browser or setting issue.
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Tests
Why packet loss matters more than peak speed
Learn why brief packet loss can disrupt calls, games, and remote work even on a fast connection, then test stability and find where to look next.
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Tests
Why a cheap external enclosure slows an SSD
Learn whether the enclosure, cable, USB port, or SSD is limiting transfer speed, and how to test each part before replacing anything.
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Tests
Graphics test causes overheating? What to do
Stop a graphics test safely, tell normal warmth from a warning sign, and check cooling, power settings, and airflow before testing again.
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Tests
GPU test scores low: what should you check?
A low browser GPU score can come from power settings, heat, display load, or software rendering. Check the likely causes before blaming the graphics chip.
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Tests
Why battery estimates differ during video encoding
See why a laptop's remaining battery time changes during video encoding, how to compare drain fairly, and what the estimate can and cannot tell you.
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Tests
Browser can't play WebM? What to inspect
Check whether the problem is your browser, the WebM file, or its video codec, then use simple tests and fixes to get playback working again.
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Tests
Portable generator noise: what to check nearby
Measure how loud a nearby generator seems from your room, compare it before and after changes, and tell noise from vibration or fan hum.
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Tests
Why Bluetooth speakers delay some computer sounds
Find out why some computer sounds arrive late over Bluetooth, compare them with another output, and check which settings may reduce the delay.
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Tests
Why video calls lag when someone uploads photos
See why photo uploads make video calls lag, test delay under load, and reduce interruptions by pausing sync, limiting uploads, or changing router settings.