Same thing happened to me. I installed my Chaintech Ti 4600 SE and tried to use TurboGFX, but it only appeared in the system tray for a sec. What's worse in my case is that my graphics are messed up, i have visual artifacts in and out of games, and this is at high color, if i try to bump it up to true color, everything that is not the background is blended into the background, so if you have a blue background, everything goes blue after a few moves of your mouse. I tried everything, using their drivers from the CD, using Nvidia's new drivers, changing BIOS settings and Windows 2000 settings... If anyone has a fix to my problem, i'd greatly appreciate it.
My PC Parts:
Asus A7V333
AMD 2100+ Processor
Samsung PC2700 512MB
TDK 40-12-48 VeloCD Burner
Chaintech GeForce4 Ti 4600 Special Edition
Western Digital 100GB 7200RPM 2MB Cache
Running Windows 2000 Prof. Edition