Some web browser will need to be there, either IIS or IIS Express. Have you verified all drivers (video/printer/sound/etc) are up to date?

>The BSOD ("Blue Screen Of Death") (as Al named them) started ONLY after I installed VS2012 and ONLY happens when VS2012 is up and running. My computer is:
>Win 7 Prof. 64 Bit.
>I installed VS2012 Express for Web (not sure if this is the same as what you call Web Developer Express).
>I don't think IIS plays any role in this problem.