Guides

Step-by-step fixes for the problems people search for most: sound on one side, a muffled headset mic, keys that type twice, a mouse that double clicks, and getting ready for a call or online exam. Each guide links to the test that checks it.

Microphone

Bluetooth headset mic sounds bad? Why it happens and how to sound clearWhy Bluetooth headsets and AirPods sound muffled once the mic is on, how to spot call mode, and the setups that sound clear both ways.Mic too quiet? How to make your microphone louder on Windows, Mac and in appsWhy your microphone sounds quiet and how to fix it: distance, input volume, auto gain, app settings, gain knobs and Windows mic boost.

Calls and exams

Echo on calls? Find out whose end it's coming from, then stop itAn echo on a call usually comes from someone else's speakers. How to find the source, stop it, and check your own setup before the next call.How to look good on Zoom and other video calls: light, camera angle and soundLight from the front, the camera at eye level, a clean lens and a mic close to you: what makes the biggest difference on video calls, and how to check it.Online proctored exam requirements: a tech checklist for the days and the hour beforeWhat to check the week, the day and the hour before a proctored exam, and what Honorlock, ProctorU, Respondus and Pearson OnVUE need.

Camera

Is my webcam hacked? How to tell, and what a camera light that turns on by itself meansHow camera lights and privacy indicators work, how to see which apps and sites used your camera, and what to check if you're still worried.

Speakers and headphones

Headphones only working on one side? How to find the cause and fix itSound in only one ear? A one-minute test tells you whether it's the headphones or a setting, then the fix for each.Speakers crackling? How to tell where the noise comes from and fix itFind out whether crackling comes from the speakers, the connection or the computer, then fix it, from Windows settings to a damaged speaker.

Keyboard

Keyboard typing double letters? How to find the faulty key and fix itA key that types twice is usually a dirty or worn switch. A one-minute typing check shows which key, then the fix for your kind of keyboard.

Mouse and clicking

Mouse double clicking when you single click? How to test it and fix itA mouse that clicks twice usually has a worn switch. A 10-second test confirms it, once you've ruled out the settings that look the same.What is a good CPS? Average click speeds, techniques and how to click fasterAbout 6 CPS is normal clicking. See what each technique typically reaches, why test length matters, and how to get faster without hurting your hand.