Okay, so I have an HP dv5 Pavilion Notebook. I have installed webcam drivers and updated my BIOS recently to solve the problem of my built in webcam not being recognized. It used to work, and one day decided it was done. An "unknown device" subsequently appeared in the USB category of the Device Manager. I figured the hardware had failed and went on with my life. Then, yesterday, it started working again! Yet today, it's not recognizing it again. Can anyone give me an idea what's going on?