Intel AGP Bus Filter (agp440) Service Defaults in Windows 7

440 NT AGP Filter by Microsoft Corporation.

Default Settings

Startup type:Manual
Display name:Intel AGP Bus Filter
Service name:agp440
Service type:kernel
Error control:normal
Group:PnP Filter
Path:%SystemRoot%\system32\DRIVERS\agp440.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\agp440

Default Behavior

Intel AGP Bus Filter is a kernel device driver. In Windows 7 it won't be started if the user doesn't start it. If Intel 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 agp440 service is not running because of the error.

Restore Default Startup Configuration for Intel 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 agp440 start= demand

3. Close the command window and restart the computer.

The agp440 service is using the agp440.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.