driver for nforce3+ATI HD3850 on Windows 7 64 bit

If the official one has been accepted on your last try use that,if not pick the one closer to it

Hi i tried both of them, and none of them is working. after installing it, graphic quality is not changed/improved.
do i need to inzip “forced” package and copy them into the official drivers’ folder ?

I have watched the video.I cant say which one is yours,you need to open that files and read through.or check the device manager and look for the current driver’s file name (driver details).
then let the setup finish so you can use the control panel for better graphic options
Have you tried the microsoft one? One from the Catalog
If still nothing,try DUMo (Drivers Update Monitor)