DeviceDIYReal answers for everyday device problems.
Find your issue, test it in the browser and follow clear steps to troubleshoot it. No vague fixes or unnecessary downloads.
Every guide includes a matching interactive test, plain-language result explanations and links to official technical references. Browser tests cannot certify hardware condition.
Webcam Not Working? Fix Camera Access and Black Screens
A systematic way to find out whether your camera problem comes from permissions, the wrong camera, another application or the device itself.
Read guide · 7 min ↗MICROPHONE TROUBLESHOOTINGMicrophone Not Working? Fix No Input, Low Volume and Permissions
Find out why your microphone is not detected, why audio levels stay flat, or why people cannot hear you.
Read guide · 8 min ↗AUDIO OUTPUTSpeaker Test Guide: Fix No Sound and Check Left/Right Audio
How to verify stereo speakers and headphones, interpret channel tests, and resolve silent browser audio.
Read guide · 6 min ↗KEYBOARD DIAGNOSTICSKeyboard Keys Not Working? Test Individual Keys and Shortcuts
Use an interactive keyboard test to diagnose unresponsive keys, repeated keystrokes and misleading shortcut behaviour.
Read guide · 7 min ↗DISPLAY DIAGNOSTICSDead Pixel vs Stuck Pixel: How to Check Your Screen
Inspect a laptop or monitor for tiny dark, bright or discoloured spots using full-screen solid colours.
Read guide · 7 min ↗MOUSE TROUBLESHOOTINGMouse Not Clicking or Scrolling? Test Buttons and Movement
Check mouse clicks, wheel events, pointer movement and common reasons a mouse misbehaves.
Read guide · 6 min ↗TOUCHSCREEN TROUBLESHOOTINGTouchscreen Not Responding? Test Touch Areas and Gestures
Check whether your phone, tablet or touch-enabled laptop registers taps and drags across the screen.
Read guide · 7 min ↗VIDEO CALL READINESSCamera and Microphone Not Working on Video Calls? Check Both
A practical pre-meeting checklist for webcam, microphone and speaker problems in browser calls.
Read guide · 8 min ↗PRE-CALL CHECKLISTDevice Check Before an Online Interview or Class: 7 Steps
A calm, complete checklist to prepare your camera, microphone and speakers before an interview, lesson or meeting.
Read guide · 6 min ↗SPECIALISED TROUBLESHOOTINGHow to Test a Microphone on Windows 11
Windows 11 microphone test, permissions and input troubleshooting. Practical instructions with a matching interactive test.
Read guide ↗SPECIALISED TROUBLESHOOTINGWebcam Not Working in Chrome? Fix Camera Permissions
Chrome webcam blocked, black preview and camera selection. Practical instructions with a matching interactive test.
Read guide ↗SPECIALISED TROUBLESHOOTINGLaptop Keyboard Key Tester: Find Unresponsive Keys
Test laptop keyboard keys, repeated input and shortcut issues. Practical instructions with a matching interactive test.
Read guide ↗SPECIALISED TROUBLESHOOTINGHow to Check Your Monitor Refresh Rate
Check screen Hz, 60 Hz versus 120 Hz, browser refresh estimates. Practical instructions with a matching interactive test.
Read guide ↗SPECIALISED TROUBLESHOOTINGBluetooth Headphones Sound Test: Left, Right and No Audio
Check Bluetooth headphone audio output and stereo channels. Practical instructions with a matching interactive test.
Read guide ↗SPECIALISED TROUBLESHOOTINGHow to Check a Used Laptop Before Buying
Used laptop buyer inspection checklist and online hardware checks. Practical instructions with a matching interactive test.
Read guide ↗SPECIALISED TROUBLESHOOTINGCamera and Microphone Test Before Microsoft Teams
Pre-Teams webcam, microphone and speaker testing checklist. Practical instructions with a matching interactive test.
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