Steps on how to solve missing model problem with pure Nvidia and other video cards.
Step 1:
This submenu is access by right clicking on your desktop.
Step 2:
this button is located in the Settings tab.
Step 3:
this button is located in tab that indentifies the type of video card that you are using. In my (maybe yours) case the tab is called
TNT2 Model 64.
Step 4:
(last step)
check the box with the description: Disable support for enhanced CPU instruction sets.
From there, all you gotta do is click ok to every window and that's how you fix your problem.
Email me at jerryhargabyte@hotmail.com in case if have any questions.