Evidently Microsoft's sercurity update earlier in November is causing some users of XP, Vista, and Win7 to get "black screens of death." I haven't had this problem, but saw this article and thought I would share in case some of you have encountered the problem.
http://www.pcworld.com/article/18344...d_to_know.html
and a link to a fix...
Black Screen woes could affect millions on Windows 7, Vista and XP