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Tests

Guides for testing your keyboard, mouse, screen, sound, network and other hardware, and for fixing what the tests find.

Tests MIDI keyboard sends duplicate notes: causes and fixes Find out whether your MIDI keyboard sends each note twice or your music app is duplicating it, then check the most common causes. Ryan MitchellOctober 23, 20264 min read
Tests Why browser MIDI testing does not work in Safari Safari does not support the browser MIDI access this test needs. Learn how to check your controller in Chrome or Edge and fix common connection issues. Kevin DoyleOctober 23, 20264 min read
Tests How to check your computer specs without installing apps See your processor, graphics, screen, battery, and other device details in your browser, then learn which specifications you need to check in system settings. Daniel HayesOctober 23, 20264 min read
Tests How to check phone motion sensors after a drop Check whether a phone's motion sensors still respond after a drop, understand what the results mean, and know when to change settings or seek repair. Jason TurnerOctober 23, 20265 min read
Tests Mouse middle-click not working: what to check Check whether the mouse wheel click registers, then find out if the cause is the mouse, a browser setting, an app shortcut, or a touchpad gesture. Michael ReedOctober 23, 20265 min read
Tests How to check a secondhand mechanical keyboard Check every key, test rollover, and inspect switches, stabilizers, cable, and wear before buying a secondhand mechanical keyboard. Kevin DoyleOctober 23, 20265 min read
Tests External display looks stretched: fix resolution and scaling Check the external screen's resolution and scaling, then fix stretched images, oversized text, or black bars in Windows 11 or macOS. Ryan MitchellOctober 23, 20265 min read
Tests Brief connection dropouts during remote work Learn what brief internet dropouts mean for calls, remote desktop, and uploads, then test for packet loss and fix the most likely cause. Ryan MitchellOctober 23, 20265 min read
Tests How to check a laptop and external monitor together See whether your laptop and external monitor are both detected, set up correctly, and showing the right image with a quick browser check. Daniel HayesOctober 23, 20265 min read
Tests How to tell if background apps affect CPU tests Learn how to compare Processor Test results, spot CPU load from background apps, and tell whether a low score points to software, heat, or hardware. Kevin DoyleOctober 23, 20265 min read
Tests How to test GPU performance in a browser Run a free browser GPU test, understand its score and compare results fairly. Learn what to check if graphics performance seems low. Michael ReedOctober 23, 20264 min read
Tests How to check if a power bank charges well Compare a power bank with a known charger using your device's charge rate, and learn what slow charging or heat can tell you. Jason TurnerOctober 23, 20265 min read