Direct3D Problem

Hello! I reinstalled windows (to Windows XP Home Edition SP3) in my notebook (HP Compaq nx6325) and I installed all drivers from hp.com. But now DirectX Diagnostic Tools said that Direct3D is not available. But I installed DirectX 9.0c. I tried to reinstall my graphic card drivers couple of time, i tried to reinstall my windows, i tried to download Omega drivers and drivers from ati.com, I tried to do Windows Update. But one time when i was reinstalled my graphic card drivers, Direct3D worked, but after one computer restart screen was black for 1 sec. and then DirectX Diagnostic Tools said that Direct3D is not available again. Can you help me? Thanks!

P.S. My graphic card is ATI Radeon Xpress 1150
 
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