Intel AGP Bus Filter (agp440) Service Defaults in Windows 10

440 NT AGP Filter by Microsoft Corporation.

The Intel AGP Bus Filter service exists only in:

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 10 it is starting only if the user, an application or another service starts it. If Intel AGP Bus Filter fails to start, the failure details are being recorded into Event Log. Then Windows 10 will start up and notify the user that the agp440 service has failed to start due to the error.

Restore Default Startup Configuration of 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 C:\Windows\System32\drivers directory. If the file is removed or corrupted, read this article to restore its original version from Windows 10 installation media.