SIS AGP Bus Filter (sisagp) Service Defaults in Windows 10

SIS NT AGP Filter by Microsoft Corporation.

The SIS AGP Bus Filter service exists only in:

Default Settings

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

Default Behavior

SIS 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 SIS 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 sisagp service has failed to start due to the error.

Restore Default Startup Configuration of SIS 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 sisagp start= demand

3. Close the command window and restart the computer.

The sisagp service is using the sisagp.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.