thx for you guys's help, I'm using friend's pc now, so can't type chinese
My computer is really dead, I try driver, other CPU, power, mobo, VGA, HDD nothing work.
So i'll just get a new one :)
my dead sys:
CPU AMD 65nm 5000+
MB: M2N-E
HDD hitachi 320G
VGA:XFX 9800GTX
POWER: CM Real Power Duo 600W