Steam Penumbra: Overture, Black Plague & Requiem

[gagoloth]

Well i have a XFX 8800 GS alpha dog edition video card
and thanks for trying to help thomas but iv tried all that already.
i uninstalled my video drivers then used a driver cleaner to make sere there was nothing left
then restarted downloaded the new drivers installed them restarted but still get the same thing.
i guess that everyone that has a 8800 gs and gt card the game dose it to them.but iv brought this problem up with Steam gonna see if they are gonna do anything to fix it...