Caps-Lock OSD and CD Eject Application Software

I got my nice shiny new Alienware X51 about two months ago and well I love it, It easily runs all my games on max settings with everything enabled at 1080p although aliasing must be set to x2 for a constant over 40 fps. These games including:- Bioshock infinite +50 FPS Arma 3 Alpha +40 FPS

i have a dell 1545 and each time i try to access webcam central or if any other application like skype tries to use webcam, a typical blue screen error is generated folllowed by a system reboot and thereafter the system responds very slow. The speed of the OS also slows down.