Major driver installation/uninstallation problem

[Guest Jonathan Clark]

Well seems like I've managed somehow to completely mess up my Geforce 8600M GT drivers installation.

The problem started after I've tried to roll back to WHQL certified ASUS drivers since I wanted to be able to play HD DVD content which non WHQL drivers do not support.

It seems like everytime I try to install the drivers after I've got tired of s*** performance with ASUS official drivers it installs my 8600M GT as a 8400GS.

I've tried installing 169.09 and 169.17 yet it still detects my VGA driver as 8400GS. These two drivers worked perfectly before I rolled back to ASUS official drivers.

After I tried these two drivers with no success I used the Driver Cleaner.net program to uninstall any NVIDIA remains yet after I did so I couldn't even install using the setup.exe in the drivers package files.

What I tried now is install manually the drivers from the system device manager and here comes the weird part...

It showed my VGA driver was succesfully installed as a 8600M GT yet in the device properties it mentions:

Adapter Type: NVIDIA Geforce 8600M GT

Adapter Information:

Chip type: Geforce 8400 GS

Adapter String: Geforce 8400 GS

Seems like everything I try to do is hopeless since I'm still stuck with 8400GS in the Nvidia control panel system information.

any ideas? :)

System Specs:

ASUS G1S-A1

Intel Core Duo 2 @ 2.2Ghz

2GB DDR2 667Mhz

Geforce 8600M GT

Windows Vista 32bit Home Edition