Detect Webcam Device Why Doesn't My HP Windows 7 Laptop Recognize My Built In Webcam Device?

Why doesn't my HP windows 7 laptop recognize my built in webcam device? - detect webcam device

The device has an iSight camera and CyberLink YouCam. I tried to open recently and said that "no video device detected." In the control panel for indicating devices, an unknown device connects to the USB 2.0 port.
"Windows is this device, because of problems. (Code 43) reported has stopped"
Is there anyway to fix this problem?

I also wonder if I made a full recovery of the system, CyberLink YouCam program will still be there after?