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
What battery percentage per minute can tell you
Learn how to read a battery's percent-per-minute charging rate, compare chargers fairly, and spot when a low reading points to the device or setup.
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Tests
Can a browser test reveal a charger's real wattage?
Check what the browser's Charger & Cable Test can measure, how to compare chargers and cables, and why percent per minute is not wattage.
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Tests
Laptop plugged in but battery percentage not increasing
Find out why your laptop says it is charging but the battery stays put, compare chargers and cables, and check which fixes are safe to try.
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Tests
Why a USB-C connector doesn't guarantee high speed
Learn why USB-C ports and cables can still be slow, how to test a flash drive or card, and which part of the connection limits transfers.
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Tests
How to compare a card reader with a camera's USB
Compare the same memory card in a card reader and a camera, then learn what the speed results say about the card, USB link, and transfer method.
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Tests
Why external drives slow down through USB hubs
Learn why an external drive slows down through some USB hubs, how to compare its speed, and which cable, port, or power fix to try.
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Tests
How to test a used laptop for overheating
Run a short browser stress test, watch for performance drops, fan noise, or shutdowns, and learn when a used laptop may need cleaning or repair.
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Tests
How to detect CPU slowdown without temperature readings
Find out whether your computer slows down under sustained load without a temperature readout, using a browser test and repeatable checks.
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Tests
How to test whether laptop position affects cooling
Compare the same laptop load on a desk, stand, and other positions to spot blocked airflow or heat-related slowdowns, without relying on touch alone.
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Tests
Hot laptop: clean it or add more RAM?
A hot, slow laptop may need cooling, not more memory. Test for heat-related slowdowns and check whether RAM is really the limit before upgrading.
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Tests
Does reducing screen brightness save battery?
Compare battery drain at different brightness levels, learn when dimming makes a noticeable difference, and separate screen use from other power loads.
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Tests
How to observe laptop battery drain during an online meeting
Measure your laptop's battery before, during and after a video call. Learn how to read the drain rate and tell normal use from a battery issue.