NVIDIA nForce AGP Bus Filter (nv_agp) Service Defaults in Windows 7

NForce NT AGP Filter by Microsoft Corporation.

Default Settings

Startup type:Manual
Display name:NVIDIA nForce AGP Bus Filter
Service name:nv_agp
Service type:kernel
Error control:normal
Group:PnP Filter
Path:%SystemRoot%\system32\DRIVERS\nv_agp.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\nv_agp

Default Behavior

NVIDIA nForce AGP Bus Filter is a kernel device driver. In Windows 7 it won't be started if the user doesn't start it. If NVIDIA nForce AGP Bus Filter fails to start, Windows 7 attempts to write the failure details into Event Log. Then Windows 7 startup should proceed and the user should be notified that the nv_agp service is not running because of the error.

Restore Default Startup Configuration for NVIDIA nForce AGP Bus Filter

1. Run the Command Prompt as an administrator.

2. Copy the command below, paste it into the command window and press ENTER:

sc config nv_agp start= demand

3. Close the command window and restart the computer.

The nv_agp service is using the nv_agp.sys file that is located in the %WinDir%\system32\DRIVERS folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 7 installation media.