Live test
Ready.
What it measures
Requests camera permission and shows a local live video preview without uploading it.
How to interpret problems
A blank preview can come from denied permission, another app holding the camera, OS privacy settings or driver/device failure.
Diagnostic workflow
- Run the test twice in this browser.
- Repeat in another browser when possible.
- Reconnect or re-pair the device and repeat.
- Compare another USB port, cable, output/input selection or device.
- Only treat the result as a hardware fault when the behavior remains consistent across environments.
FAQ
Does this install anything?
No. The diagnostic runs with browser APIs. Device-permission tests ask the browser for permission only when you start them.
Does NovaTools upload my device input?
These Test Lab modules are designed to run locally in the page. Camera and microphone previews are processed in the browser and are not sent to a NovaTools processing endpoint.
Can one failed result prove the hardware is broken?
Not always. Browser, operating-system, permission, driver, cable, wireless and power settings can produce similar symptoms. Use the troubleshooting guidance and compare another environment before replacing hardware.