Windows Vista Services

NVIDIA nForce AGP Bus Filter - Windows Vista Service

NForce NT AGP Filter by Microsoft Corporation.

This service also exists in Windows 10, 7 and 8.

Startup Type

Windows Vista edition without SP SP1 SP2
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Default Properties

Display name:NVIDIA nForce AGP Bus Filter
Service name:nv_agp
Error control:normal
Group:PnP Filter

Default Behavior

NVIDIA nForce AGP Bus Filter is a kernel mode driver. If NVIDIA nForce AGP Bus Filter fails to start, the error is recorded into the Event Log. Windows Vista startup proceeds, but a message box is displayed informing you that the nv_agp service has failed to start.

Restore Default Startup Type for NVIDIA nForce AGP Bus Filter

Automated Restore

1. Select your Windows Vista edition and Service Pack, and then click on the Download button below.

2. Save the RestoreNVIDIAnForceAGPBusFilterWindowsVista.bat file to any folder on your hard drive.

3. Right-click the downloaded batch file and select Run as administrator.

4. Restart the computer to save changes.

Note. Make sure that the nv_agp.sys file exists in the %WinDir%\system32\drivers folder. If this file is missing you can try to restore it from your Windows Vista installation media.