BIOS和開機畫面 is floating!!!!

Once i install the New driver from URL!! I can login to windows XP again....(everytime)

My PC is P4 1.5G 256 M ram

Sometime the machine will make a "do di do" sound <--from PC speaker!!! Specially when I playing game <---also make the game slow...

And what is the Core Clock(270?) and Memeory Clock(2xx?) for my 7500 card??

plz help...i am testing the card second days...........