Direct3D Problems

I’ve been having problems with my 3D stuff.

Example:

Does anyone know what that means? I’m totally confused about it. I can’t get any 3D thing to work.

Run dxdiag and if that won’t work re-install the gfx drivers properly.

It said:
‘Direct3D functionality not available. You should verify that the driver is a final version from the hardware manufacturer.’

What does that mean? And how would I reinstall the gfx drivers?

Uninstall it, then restart and install the new drivers.