GRAPHICS ACCELERATION

I recently assembled this system specs:
ELITE K7S5A mobo
AMD DURON 950
S3 SAVAGE4 EXTREME AGP 32MB
128MB PC 133 SD RAM

Now, I have done the installation of Windows 98 SE. I encountered only one problem, whenever I tuned my graphics accelerator card to FULL, the systems fails to boot @ windows. Can’t really figure out why? But when I disabled the accelerator, then the system is ok with it’s color. But by this, can’t play any directx dames using AGP texturing. Any advice?