wrong directx crashing my computer?

i have a radenon HD 4670 which i know that directx 11 dont support but when i check my dxdiag i says directx 11.

some games im playing just turn black during cinematics with only audio playing, i want to know how to fix this, and im not sure if this is because of my directx problem.

also i serched for the latest driver for my graphics card and the one i found is 4600 series i dont know if these is the proper driver for my card, because my card is HD 4670.

hope somebody can help thanks alot

 

32 bit, also im using the recommended resolution (1024x768)

also tried other compatibility modes still nothing.

pls help me out here

 

windows 7 ultimate

thanks for replying

 

thanks, my driver are up to date including te catalyst, im wondering now if i could have done something with the setting of windows 7 or something. because when i instaled thesame game on my laptop with windows vista service pack 2, the game was fine. i realy cant figure this one out.

thanks for your time