=>Click Start, then right-click on My Computer, and then select Properties.
=>On the My Computer properties window, click on the Hardware tab, and then click Device Manager.
=>Click on the plus ( +) sign next to Imaging Devices and locate the webcam item in the device list.
=>If the webcam is not listed, do the following activities to install the driver using the webcam driver recovery.
=>Click Start, click All Programs, click PC Help & Tools, and then click HP Application Recovery.
=>Select Driver installation and click Next.
=>Select the HP Webcam 1000 driver from the list, and click Install.
If the webcam is listed under Imaging Devices but there is a red X on the icon, the webcam is disabled. See figure below.
Disabled Webcam Icon
*img154.imageshack.us/img154/869/c006784284kk.gif
=>To enable the webcam, right-click the HP WebCam 1000 icon and click Enable. The webcam icon should display on the Desktop.
More @ this HP webpage - HP Notebook PCs - Resolving Problems with the Built-in HP Webcam
Solve a problem - HP Pavilion dv2117tx Notebook PC
Useful HP stuffs - HP Notebook PCs - Checking Your Notebook PC Using the HP System Health Scan