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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
Storage test score declining over time? What to check
Find out whether a lower storage score points to low free space, background activity, heat, or a drive problem, and compare tests fairly.
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Tests
How to check monitor uniformity before color grading
Check a monitor for uneven brightness or color before grading. Use full-screen test patterns, separate panel issues from settings, and know what to adjust.
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Tests
Can a phone microphone certify dBA?
Learn why a phone's built-in microphone cannot certify dBA, how to use a browser noise meter for comparisons, and when to use a calibrated sound level meter.
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Tests
Why your Wi-Fi connection stalls every few minutes
Find out whether repeated Wi-Fi stalls come from the wireless link, router, or internet service, then narrow down the cause with simple tests.
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Tests
How to check Wi-Fi stability in a metal building
Check whether metal-framed walls are disrupting Wi-Fi with repeatable tests for response time, jitter and drops, then find a better router location.
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Tests
What to test before uploading a huge video file
Estimate how long a large video upload may take, check upload speed and stability, and reduce the chance of a failed transfer.
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Tests
Why a website cannot show your exact CPU model
Learn why browsers hide the exact CPU model, what System Info can still report, and where to find the full processor name on Windows or Mac.
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Tests
Why copying small files takes longer than big ones
Learn why a folder of small files can copy more slowly than one large file, how to compare drive performance, and what to check next.
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Tests
How to compare a laptop before and after fan replacement
Use the same browser test and conditions before and after a laptop fan replacement to see whether heat-related slowdowns improve and what to check next.
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Tests
How to read system information without admin rights
See which device details a browser can show without admin rights, what may be missing, and where to check processor, memory, display, and battery info.
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Tests
How to check a public PC's basic capabilities
Check a public PC's processor, graphics, screen, browser and network before a task, and learn what a browser report cannot confirm.
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Tests
How to test a DisplayLink monitor
Check whether a DisplayLink monitor is detected, shows the right resolution, and displays clean colors, then isolate problems with the dock, cable, or driver.