Simple hardware checks,
clear expectations.

What these tools do

Each test shows the events, media streams or rendering information available to your browser. The results help you investigate a problem, but are not a certified hardware diagnosis.

Privacy and device permissions

The test code processes keyboard, mouse, controller, microphone and camera input in your browser. It does not upload test input, audio or video, and these tools do not save recordings. Camera and microphone access begins when you start the relevant test and permit access.

Loading the website still makes normal web requests to our hosting provider, Vercel. Hosting infrastructure may process request metadata such as IP address and browser information. We use Vercel Web Analytics for aggregated page-view statistics, such as visited pages, referring sites, country, browser and device type. It does not use analytics cookies or receive keyboard input, test results, microphone audio or camera video. We remove query parameters and fragments from the page URL sent to analytics, and skip analytics when your browser signals Do Not Track or Global Privacy Control. Vercel processes request metadata to produce these statistics. Learn more in Vercel's analytics privacy documentation. Optional Google Analytics, if configured, runs only after you accept it. Read the privacy and cookie explanation or contact us about a problem.

You can stop a camera or microphone session using its Stop button, close the page, or revoke access through your browser settings.

How our guides are prepared

Our troubleshooting guides combine the behavior of these browser tools with linked documentation from browser, operating-system and device manufacturers. Each guide shows its content update date and distinguishes observations from a hardware diagnosis. Report an unclear or incorrect instruction through our contact page; do not send private recordings.

Browser support

Use a browser with the required hardware APIs on your PC, laptop or MacBook. Device access and fullscreen behavior depend on browser support, operating-system permissions and the connected hardware.