Webcam cuts out after a factory reset: how to test

Your webcam works for a few minutes, then freezes, disappears, or shows a black preview. If this started after a factory reset, the reset may have changed camera permissions, the selected device, or its driver. It does not automatically mean the webcam is broken.

Start with a repeatable check, then compare the camera in a browser and in the app where it fails. Test Everything runs the available tests step by step and provides a report. For a closer look at the camera itself, use the Camera Test.

Test the webcam after the reset

1. Open Test Everything and follow the test steps. Note whether the camera check works, fails immediately, or stops after running for a while.
2. Open the Camera Test. Allow camera access when your browser asks, then check whether the live preview stays steady for a few minutes. Note the reported resolution and frame rate, and whether they change before the preview freezes.
3. Try the camera in the app where you first noticed the problem. Check that the app is using the same camera you tested in the browser. If there is more than one camera, such as a built-in webcam and a USB camera, compare them one at a time.
4. Restart the computer and repeat the browser check. If it is an external webcam, connect it directly to a different USB port rather than through a hub or dock.

Keep track of what you changed between checks. If you change permissions, ports, drivers, and app settings all at once, it becomes harder to tell which change helped.

What the result means

The preview stays steady, but one app loses the camera

The webcam and browser can use the camera, so the fault is more likely in the app's permission or camera selection. Check that app's video settings and close other programs that may be using the camera. For a closer guide to this pattern, see Camera works in one app but not another.

The camera works, then freezes or disappears in both places

A problem that follows the camera across the browser and another app points to a connection, driver, or device issue. If it is a USB webcam, a loose cable, hub, or port can interrupt it. If it is built in, the driver or internal connection may be at fault.

The browser cannot show a preview

Check whether the browser has camera permission and whether the operating system allows camera access. A factory reset can restore privacy settings to their defaults. If the camera is not listed by the computer at all, check its connection or driver before treating a blank preview as proof of hardware failure.

The preview works only after a restart

Another app may be holding the camera, or the device may be failing to resume after sleep. Note whether the problem follows sleep, a long video call, or a particular app. If it happens after the computer warms up or the camera has been in use for a while, repeat the check after a cool start and compare.

The frame rate or image quality changes but the preview does not stop

This can happen when lighting changes or another app uses the camera at a different resolution. A lower frame rate by itself does not prove the webcam is faulty. Look for a complete freeze, repeated disconnect, or failure across multiple apps and sessions.

How to fix the interruptions

1. Close other camera apps. Quit video call, meeting, camera, and recording apps, then test again. A program that is open in the background can keep access to the camera or interfere with another app.
2. Allow camera access in the system. On Windows 11, open Settings › Privacy & security › Camera and turn on camera access and access for the type of app you are using. On macOS, open System Settings › Privacy & Security › Camera and allow access for your browser or the affected app.
3. Allow the browser to use the camera. Check the site permissions from the browser's address bar and allow camera access for TooLab. Reload the page and test again. If the browser still blocks access, check its privacy settings and any extensions that control permissions.
4. Select the right camera. In the affected app's video settings, choose the same webcam that worked in the Camera Test. On Windows 11, you can also review available cameras in Settings › Bluetooth & devices › Cameras. On macOS, check the camera choice inside the app, since the system does not provide one universal camera selector.
5. Reconnect an external webcam. Unplug it, wait a few seconds, and connect it directly to another USB port. If it works without a hub or dock, test the hub separately or leave the camera connected directly.
6. Check for system and camera driver updates. On Windows 11, open Settings › Windows Update and install available updates, then restart. You can also open Device Manager, expand Cameras, and check whether the webcam is listed or marked with a warning. On macOS, open System Settings › General › Software Update. If the issue began after an update, check the computer maker's support instructions for the correct camera driver instead of installing drivers from an unfamiliar download site.
7. Test after a clean restart. Restart the computer, open only the browser test, and watch the preview again. If the webcam is stable until a certain app starts, update or reset that app's camera settings before changing system drivers again.

When the webcam may be hardware

Suspect hardware when the camera repeatedly disconnects in different apps and browsers, after a restart, and with permissions enabled. For a USB webcam, try it on another computer and gently check whether moving the cable interrupts the image. If it fails there too, or the connector is loose, the cable or camera may need replacement.

A built-in webcam that is absent from the computer or keeps dropping out after system updates and permission checks may need service. If the laptop is under warranty, contact the manufacturer before opening the case. A browser test can show that the camera is unreliable, but it cannot identify a damaged internal cable or camera module by itself.

Write down when the camera drops out and which tests reproduce it. That gives a repair technician or support agent a more useful starting point than the fact that the problem began after a reset.