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 evaluate an air purifier's noise at each speed
Compare an air purifier's low, medium, and high settings fairly with a browser noise meter, and learn what the readings can and cannot tell you.
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Tests
How to compare webcam quality at 24 and 30 fps
Compare the same webcam at 24 and 30 fps, check motion, brightness and sharpness, and learn when a higher frame rate is worth using.
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Tests
What a good hardware report cannot prove
Learn what TooLab's Test Everything report can confirm, what browser checks leave out, and how to follow up on a warning or a clean result.
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Tests
How to test a laptop GPU after a major OS upgrade
Check your laptop's graphics after an OS upgrade with a browser GPU test, understand the score, and troubleshoot driver, power, or browser issues.
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Tests
How to prioritize failures after a hardware check
Learn how to sort a full hardware check into urgent failures, repeatable problems, and low-priority issues, then choose the safest next fix.
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Tests
Why an HVAC grille vibrates with music
Find out whether music is shaking a loose grille, a duct part, or the speaker itself, then try safe checks before calling an HVAC technician.
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Tests
Why system load distorts memory test results
Learn why background apps, heat, and browser activity can change RAM read and write scores, then retest under steady conditions.
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Tests
What to inspect after a printhead replacement
Check print quality, ink flow, alignment, and cartridge seating after replacing a printhead, before deciding whether to clean or reinstall it.
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Tests
How to spot noisy motion data on a stationary tablet
Check whether a tablet's motion readings drift or jump while it rests, learn what normal sensor variation looks like, and find likely causes.
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Tests
Why laptop fan activity may increase battery use
Learn whether the fan itself or the heat that starts it is draining your laptop battery, and compare drain rates with a browser-based Battery Meter.
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Tests
How to check an electronic drum pad's MIDI response
Check whether each pad sends MIDI notes and velocity, then separate connection, browser permission, and trigger-setting problems before changing your setup.
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Tests
How to compare noise at two classroom positions
Compare classroom noise at two desks with the same device and repeatable readings, then see whether the difference is steady or just a passing sound.