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 your webcam changes colors when you move
See why webcam colors shift when you move, test the camera outside your calling app, and adjust lighting, white balance, or permissions.
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Tests
How to check focus on a webcam with no autofocus
Check whether a webcam is sharp at your normal distance, tell fixed focus from a fault, and find the right next step without installing software.
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Tests
What to check before installing new desktop speakers
Check your PC's audio output, speaker power, cables and placement before setup, then test left and right channels to catch connection problems.
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Tests
How to check a monitor for brightness pulsing
Use a browser display test and simple setting checks to find out whether monitor brightness pulsing comes from the screen, cable, or computer.
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Tests
Why blacks look purple on some LCD screens
Find out whether purple-looking blacks come from LCD viewing angles, display settings, or a panel fault, then test the screen and choose the right fix.
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Tests
What lost browser requests do and do not prove
Learn what a browser connection test's lost requests mean, what they cannot identify, and how to compare results before changing your network.
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Tests
Why color profiles change the look of a printer test
Learn why a printer test page can look different under different color profiles, how to check the print settings, and when color is not the problem.
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Tests
When a print test points to a mechanical fault
Learn how to read a printer test page for paper-feed, alignment, and repeated-mark problems, then decide what to clean, test, or repair.
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Tests
Why browser memory tests can't measure ECC corrections
A browser RAM test measures speed and response time, not ECC error corrections. Learn what it can show and where to check error logs.
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Tests
Memory test stalls under load: what to check
See why a RAM test slows or freezes under load, how to separate browser limits from memory pressure, and what to check before blaming the hardware.
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Tests
Why browser reports can't confirm dual-channel RAM
A browser can measure memory speed, but it cannot see channel mode. Learn what the result means and how to verify dual-channel RAM.
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Tests
Why a fast SSD takes time to open small files
Learn why an SSD's headline speed does not guarantee quick small-file opens, how to test the drive, and what to check next.