yes , the bios is the last release of gigbyte.
tonight is appeared the blu screen of xp and the message was : the problem can be nvdisp , contact your dealer for new driver.......
i'm very depressed....
nobody can help me ?
thank to all have answer to me , but my problem is not resolved

my card is AGP , and i have reinstalled Windows xp , driver for chipset and audio, directx 9.0c , i have good experience about format and installation
hardware and software , i think the problem can be about hardware compatibility or nvidia driver still not good for this gpu.

p.s. the card have an identical molex connector like hard disk and my power supply is 400 W

yes is LFS.

my Ati 9700 pro is dead , i have bought a club3d 7600 gs card , but the game after 10 ,15 seconds freeze.
I have changed driver ( 91.33 official , 91.45 beta , 91.47 beta ) but i have not resolve the problem.
Can you help me please ?

My oteher hardware is:
mainboard Gigabyte GA-K8ns
AMD Sempron 3400+
1024 mb ram ddr 400mhz

thank you

p.s sorry for my english , i am from Italy.