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
Why battery charge rate varies between tests
Learn why the same charger can show different speeds, how to compare tests fairly, and when a slow result points to a cable, charger, or battery problem.
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Tests
How to test a USB flash drive's real speed
Measure the real read and write speed of a USB flash drive, understand the numbers, and find out whether a slow port or the drive is the problem.
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Tests
Why your USB 3.0 drive transfers files slowly
Find out whether a USB 3.0 drive is slow because of its port, tiny files, or the drive itself, then compare its real read and write speeds.
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Tests
When a speaker rattle means damaged hardware
Use a bass sweep to tell whether a speaker rattle comes from a loose object, audio settings, or damaged hardware, and what to do next.
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Tests
Stuck pixel vs dead pixel: how to tell them apart
Learn how a stuck pixel differs from a dead pixel, test your screen with solid colors, and find out whether a flashing fix is worth trying.
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Tests
Why can't my browser show laptop battery data?
Learn why a browser may hide battery status, how to check whether your laptop still reports it, and what to try when the Battery Meter is missing.
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Tests
How to tell if a printer problem is ink or settings
Print a test page to see whether faded, streaky, or wrong-color output comes from ink, paper, print settings, or the printer itself.
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Tests
Laptop loses charge while sleeping: what to check
Check how much charge your laptop loses overnight, separate normal sleep drain from a problem, and find the settings or hardware to check next.
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Tests
Why Wi-Fi bars can't tell you your real speed
Wi-Fi bars show a rough link to your router, not internet speed. Learn what to test instead and why signal strength and download speed can disagree.
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Tests
How to check each connected screen's resolution
See the resolution and scaling of every connected display, identify which screen is which, and set the right resolution in Windows 11 or macOS.
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Tests
Why does my keyboard type the same letter twice?
Find out whether a key is sticking, a repeat setting is too fast, or a connection is glitching, then follow simple checks to stop duplicate letters.
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Tests
Keyboard works in BIOS but not in Windows
If your keyboard works in BIOS but stops in Windows, test which keys register and work through the Windows settings, driver, USB, and app fixes.