Hello everyone! I have a serious problem. I have a Diamond Viper 550 16Mb AGP with detonator drivers ver. 220.127.116.1123(eng) windows XP prof (eng)/no service pack installed DirectX8.1 (XP preinstalled) all worked perfectly untill i used nVHardPage after that i dont have hardware acceleration anymore. I reinstalled the drivers and the problem remains.I tryied RivaTuner but nothing again. In DxDiag DirectDraw Direct3D and AGP texture acceleration are all reported as not available. My games all look very ugly (e.g. Wheel of time/Unreal engine in 1024x768 res) and some others (e.g. Falcon 4.0) dont even detect 3D hardware (only 640x480 software mode available). I think the only solution may be to install Dx9b but i dislike the idea because the last time i installed it i had to reinstall windows after that.. The best known solution (aka "Reinstall Windows") is maybe my last choise but i d prefer digging in the registry by myself to re-enable 3D acceleration if i knew what to search for. Any ideas?? Plzzzzz help!