Samsung 700Z COREI7-2675 15.6 8GB 750GB W7H "install motherboard images" Questions

i bought a pc camera for video chatting purpose,i installed the pc camera"s hardware,but when i try to capture video or video chat my pc camera does not work due to video capture hardware problem

...image. NOTE! Pull out the battery and unplug AC adapter from the laptop prior to a new screen installation! This is needed to reset a video card to recognize your new screen. A video issue may ...