AMD AGP Bus Filter Driver (amdagp) Service Defaults in Windows 7

AMD NT AGP Filter by Microsoft Corporation.

Default Settings

Startup type: Manual
Display name:AMD AGP Bus Filter Driver
Service name:amdagp
Service type:kernel
Error control:normal
Group:PnP Filter
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\amdagp

Default Behavior

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

Restore Default Startup Configuration of AMD AGP Bus Filter Driver

1. Run the Command Prompt as an administrator.

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

sc config amdagp start= demand

3. Close the command window and restart the computer.

The amdagp service is using the amdagp.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 7 installation media.