Problem with MoP run

Hi every1, i tried to open my wow client today and i got this post: "World of Warcraft was unable to start up 3D acceleration. Please make sure DirectX 9.0c is installed, and your video drivers are up-to-date."
Then i download directX again and installed it but still the same problem...also all my other games are unable to open lol...and internet videos are slow as f**k. I am not so pro with all this stuff so can some1 help me with this? Where to check video drivers and what i need to do to make MoP client wor again...Skullbash where are you :P

Ok, i found a problem and now i need help. On the internet i found that i need run directx diagnostic tool and enable my directdraw and direct3D acceleration but i cant do that...its said its not available...DirectX features: DirectDraw acc: not available
Direct3D acc: not available
AGP Texture acc: not available... :((