After Installing Windows XP SP3 on my IdeaPad Y510, I noted that the camera is not recognized.
The camera does not even showing in device manager...
1) Open Control Panels -> System
2) Then hardware tab, then device manager
3) Select "View" pull down and then "view hidden devices"
If you still cant see it, then its probably one of the uknown devices. Try disabling/enabling those two and make sure you are installing the correct driver for your device. a wrong driver installed, maybe causing this issue.