Blog
Short, practical guides for checking your hardware and fixing what the tests find.
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Tests
Why arrow keys scroll instead of moving the cursor
Find out why arrow keys scroll the page or sheet instead of moving the cursor, test whether the keys register, and fix focus or Scroll Lock.
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Tests
How to test if a USB adapter adds mic noise
Compare the same microphone with and without a USB adapter to find hiss, crackle, level changes, and other noise, then narrow down the cause.
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Tests
How to find the cleanest microphone input before a webinar
Compare your microphones in a quiet room, hear background noise and distortion, and choose a clean input before your next webinar.
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Tests
How to check laptop battery drain in a browser
Check your laptop's battery drain with a browser meter, compare the rate under the same conditions, and learn what to change if it drops fast.
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Tests
Why audio sounds centered in only one headphone
Use a left and right channel test to find out whether the cause is mono audio, a balance setting, an app, or a headphone connection.
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Tests
How to tell if Windows is mixing stereo into mono
Use a left and right speaker test to find out whether Windows combines stereo channels, then check the mono setting, output device, and app.
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Tests
How to compare CPU speed before and after heating
Run the same CPU benchmark before and after a heat test to see whether performance drops, then learn how to make the comparison fair.
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Tests
Laptop fan loud but performance drops
Find out whether heat is slowing your laptop, how to check it with a browser test, and what to fix before paying for a repair.
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Tests
Why battery life estimates jump up and down
Learn why your laptop's remaining battery time keeps changing, how to read the drain rate, and what to check before blaming the battery.
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Tests
How to compare battery drain before and after updates
Compare battery drain before and after an update with the same settings and workload, so you can tell a real battery change from normal variation.
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Tools
How to time a presentation without a phone
Use your computer's stopwatch to time a presentation, set checkpoints, and check whether you are on pace without relying on your phone.
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Tools
How to compare lap times during interval training
Use a browser stopwatch to capture each interval, compare split times fairly, and spot when your pace starts to fade without guesswork.