User`s guide

Release 331 Graphics Drivers for Windows - Version 331.82 RN-W33182-02v01

Known Product Limitations

No PhysX Acceleration Using the GPU

If after installing the PhysX System Software you find that there is no PhysX acceleration

on supported applications, repeat the PhysX setup as follows:

1 Reboot the PC.

2 Open the NVIDIA Control Panel and then, under 3D Settings, click Set PhyX

configuration to open that page.

3 Under Select a PhysX processor, verify that either auto-select or a specific NVIDIA

GPU is selected.

4 Click Apply.

Previous Driver Files Remain After Overinstalling with

Release 256 or Earlier Drivers

Issue

When installing a Release 256 or earlier driver over a Release 260 or later driver, some of

the previous driver files remain on the hard disk, resulting in potential conflicts.

Workaround

After installing a Release 260 or later driver, you must uninstall the driver first before

installing a Release 256 or earlier driver.

Uninstalling Drivers Using Device Manager is not Supported

Issue

On all supported versions of Microsoft Windows, uninstalling the NVIDIA driver using

the Windows Device Manager may not remove associated files or applications.

Explanation

Microsoft has confirmed that this behavior is by design.

If you wish to uninstall the NVIDIA driver, it is recommended that you do so using Add

and Remove programs.

See the Microsoft KB article 2278714.