Help

DirectX dependent games simply will not play on my A720N Hp Pavilion.
I've reinstalled all drivers, downloaded and installed latest version
of Direct X but still only get the games audio and a blank screen when
trying to load games.

Of course I ran DirectxDiag and I get blank screen and H00000 error
code, It fails both ests.

Is this just a problem with AMD processor equiped machines or am I
missing something ????? Any help would be much appreciated..