Those with this video redraw problem:

Try turning Video Acceleration OFF -- and then reboot and check BB operation.

Vista and XP

I don't know if that can be done in Win 7 or not. It may just work about the same as for Vista.

But here is a Wiki page about Hardware Video Acceleration:

http://en.wikipedia.org/wiki/DXVA

Some Video Cards have their own Control Panel that accesses the Hardware Video Acceleration setting slider, too. If yours does, just turn that slider all the way down and then try running BB.

This is not just a BiaB situation if it works, some people also have to turn that off just to play DVDs properly. Windoze.

HTH,

--Mac