hello guys could some one please help me with this i have a 6600gt and when i put it in my computer the computer starts comes onto the desktop and everything and then it lags an awful lot when i try scrolling down pages lines come up and it takes ages to get to the bottom of the page i went onto the nvidia website and tried to install the drivers for the card it installs them and it either says restart computer which i do then it restarts and after the windows xp loading screen the monitor says no signal and stays like that or it doesnt restart and it goes straight to the no signal osd music still plays and computer still runs could someone please help me thanks very much guys