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Guides
Plain, sourced fixes and how-tos for controllers, keyboards, mice, and screens. Each one cites the maker's own support pages, and links a test so you can check the fix.
How to Fix a Keyboard That Isn't Working
Keyboard not working? Check the cable, receiver, or batteries, turn off Filter Keys or Slow Keys, and reinstall the driver. Then test every key in your browser.
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How to Fix a Touchpad That Isn't Working
Touchpad not working? Turn it back on, clean it, update the driver, or fix Mac trackpad settings. Then check taps, clicks, and scrolling in a free browser test.
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How to Change Your Mouse Polling Rate
Change your mouse polling rate in Razer Synapse, Logitech G HUB, or SteelSeries GG. Then check the new rate in Hz with a free browser test.
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How to Fix a Webcam That Isn't Working
Webcam not working? A browser test shows if it's blocked, in use, or not found. Then fix it in Windows, macOS, or Chrome with the makers' own steps.
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How to Test Controller Vibration
Test your controller's vibration in a browser: run each rumble motor on its own, then both. Plus what to check when it doesn't vibrate on PC, Xbox, PS5, or Switch.
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Hall Effect Controllers and Stick Drift
A Hall effect controller reads its sticks with magnets, not a carbon track that wears. What that means for stick drift, how TMR differs, and how to test one.
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How to Test a Switch Pro Controller on PC
Test a Nintendo Switch Pro Controller on a PC in your browser: every button, ZL and ZR, and both sticks. Then fix it with Nintendo's calibrate and update steps.
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How to Check Your Monitor's Refresh Rate
Check your monitor's refresh rate in your browser and in Windows or macOS settings. Learn why a 144 Hz screen can show 60 Hz and how to set it right.
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How to Test a Keyboard for Ghosting
Test a keyboard for ghosting in your browser: hold the keys you use together and see which ones drop out. Learn why it happens and what to do about it.
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How to Test a PS5 Controller on PC
Test a PS5 DualSense controller on a Windows PC in your browser: every button, trigger, and stick. Then fix it with PlayStation's pairing, update, and reset steps.
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How to Test an Xbox Controller on PC
Test an Xbox controller on a Windows PC in your browser: every button, trigger, stick, and vibration. Then fix it with Xbox's connection and update steps.
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How to Test a Webcam Microphone
Test your webcam's microphone in your browser: watch the live level and play back a 5-second clip. Then fix a silent mic in Windows, macOS, or Chrome.
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How to Test a Keyboard on a Mac
Test every key on a Mac keyboard in your browser. Then fix keys that don't respond with Apple's own steps: connection, Slow Keys, layout, and cleaning.
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How to Check a Screen for Burn-In
Check an OLED screen for burn-in with full-screen solid colors. Tell burn-in from image retention, run the maker's pixel refresh, and know when to claim the warranty.
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Backlight Bleed vs IPS Glow: How to Check
IPS glow changes as you move your head; backlight bleed stays put. Check a monitor in normal light, compare it with the same model, and report real bleed to support.
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How to Fix a Mouse Scroll Wheel That Jumps
Fix a scroll wheel that jumps up when you scroll down. Test the wheel, clean it, check the scroll settings and the wireless link, and know when it needs repair.
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How to Fix a Keyboard Typing Double Letters
A key that types twice is usually dust or a worn switch. Find the key with a test, clean it, check the connection and settings, then replace the switch if needed.
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How to Fix a Stuck Pixel or Dead Pixel
A dead pixel can't be fixed, and makers warn against home fixes for stuck pixels. Rule out dust, count the pixels, and check the pixel policy for a replacement.
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How to Fix a Mouse That Double-Clicks
Fix a mouse that double-clicks when you click once. Test the button, check the Windows and Mac settings, clean it, and know when the switch is worn.
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How to Fix Stick Drift
Fix stick drift on Xbox, PS5, and Switch controllers. Measure it, update and recalibrate, reset, clean, and set a deadzone, with each maker's steps.
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