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
Microphone picks up keyboard noise: what to change
Reduce keyboard noise in calls by moving the mic, lowering input gain, and adjusting noise suppression. Test each change to hear what works.
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Tests
Why a laptop CPU slows down on battery power
Find out why your laptop CPU may slow down on battery, compare its performance plugged in and unplugged, and check the settings that control it.
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Tests
Keyboard shortcuts not working but typing works
If letters type normally but shortcuts fail, test key rollover and check whether the app, operating system, or a setting is intercepting them.
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Tests
How to test a keypad for data entry
Check every key on a number pad, confirm Num Lock behavior, and find whether missed entries come from the keypad, browser, or app.
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Tests
Gaming voice chat breaks up: what to check
Find out whether broken-up game chat comes from Wi-Fi, connection drops, or your microphone, then try the fixes that can restore clear voice.
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Tests
Mouse clicking by itself? How to find the cause
Find out whether accidental mouse clicks come from a worn switch, connection trouble, or a setting, then test the mouse and narrow down the cause.
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Tests
How to check whether your VPN leaks your IP address
Check whether IPv6 or WebRTC exposes your real IP while a VPN is connected, learn what the results mean, and fix common leaks.
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Tests
Headset microphone picks up breathing: how to fix it
Find out why your headset mic captures every breath, test the sound in your browser, then adjust boom position, input level and noise filtering.
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Tests
Why RAM copy speed differs from read speed
A RAM copy score can be lower or higher than read speed for normal reasons. Learn what each result measures and how to compare runs fairly.
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Tests
GPU throttling after a few minutes: how to check
Check whether graphics performance falls after your PC warms up, learn what a browser test can prove, and find the cooling or power issue to check next.
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Tests
Keyboard works at login but stops after sign-in
Find out why your keyboard works at the sign-in screen but stops on the desktop, then isolate Windows settings, startup apps, or a hardware fault.
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Tests
What a failed browser request says about internet health
Learn what a failed browser request can tell you about internet stability, how to separate a brief glitch from a pattern, and what to check next.