method:
1. [Device Manager]--Right-click on any device, select [Scan for hardware changes], restart the computer and take a look.
2. If not, you need to back up and save important data to an external storage device, then restore or reinstall the system. If your computer is pre-installed with win7 or win8 system, you can press F9 to restore the system when it is turned on.
Cause: Generally, it is a system problem, and the camera is not properly recognized and loaded.
Related points:
1. Plug the camera into the USB port on the back of the computer host, and replace the port to see. If it doesn't work, find a usable U disk or other USB device and plug it in to see if it is normal. Check if it is a computer problem.
2. Take the camera to another computer to see. Check to see if it's a camera problem.
3. There is no question about how to add image processing devices in the device manager.
4. Right-click on the device manager - scan for new hardware, it will prompt to find new hardware, install the driver, or download the camera driver corresponding to the notebook, install it, and it will appear in the device manager, provided that the camera is normal.
About Device Manager:
1. The device manager is a process running under the Windows CE operating system that tracks loaded drivers and their interfaces.
2. It runs continuously and starts from the kernel.
3. The device manager can notify the user when a device interface becomes available and unavailable. The user or the system itself can make the device interface available or unavailable.
4. Device Manager controls the Active item in the registry.