Display drivers often cause this go to one of the below sites and update your video card or adapter drivers to the latest - you can find your video adapter, and its details in device manager or on the below support page - download the latest vista driver - the driver may need to be installed in compatibility mode with vista if there is a Os mismatch error, and they wont install :
To install a driver OR program in compatibility mode - right click the setup.exe file - click properties - click compatibility - check run in compatibility with vista/xp etc - check run as administrator - leave the rest blank. Start setup.exe and install.
Remember W764BIT requires signed drivers so dont download the latest beta drivers for the 64bit version.
Your camera should "plug and play" and say its loading a driver for it - make sure its turned on when you connect -it should be visible in the computer folder press start, and on the right side is computer click it and see if your camera is visible if not you have a problem. Hopefully it may also be related to the video drivers - post back if my suggestions dont work ie if someone else doesnt solve it firstly.
If the video driver doesnt fix the problem do this to stop the sleep option - click start - type power in search - select Power Options - click change plan settings - change put computer to sleep to Never and save.
Intel download site - Download Software, Drivers and Utilities
Your driver Support Page below - but try to find a later driver at the intel site. Select one of the vista operating systems and the driver support page will be loaded. Support - Fujitsu