When the camera application prompts "Device Not Found" upon opening, we can perform the following operations to verify the issue:
Check the Physical Switch: Confirm whether the camera switch on the left side of the machine's keyboard is in the ON state and whether the camera indicator light is lit. If the switch is not open, simply toggle it to open.
Check Device Manager: After confirming the camera switch is open, open the Device Manager to verify if the camera device icon is present. If it is not present, the machine needs to be sent to an after-sales service point for repair.
Restart the Computer: Attempt to restart the computer and open the camera application again to confirm if the camera can work normally. If not, the machine needs to be sent to an after-sales service point for repair.
