I have an Emachines E627 laptop that came with a built in laptop. I know it should work fine, because I've used it before to take pictures with my cousin, but it recently stopped working. I looked at the device info and my computer recognizes it, and it says the driver is up to date, but whenever I click on it to open it the window opens, but it just shows a black screen. Why is it doing that? Is there some way I can fix it?