SIS AGP Bus Filter (sisagp) Service Defaults in Windows 8

SIS NT AGP Filter by Microsoft Corporation.

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

The SIS AGP Bus Filter service is a kernel device driver. In Windows 8 it will not be started until the user starts it. If SIS AGP Bus Filter fails to start, the error details are added to Windows 8 error log. When the operating system startup is complete, the user is being notified that the sisagp service hasn't been started.

Restore Default Startup Configuration for SIS AGP Bus Filter

1. Select your Windows 8 edition and update pack, and then click Download.

2. Save the Win8_sisagp_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The sisagp service is using the sisagp.sys file that is located in the %WinDir%\System32\drivers folder. If the file is corrupted or deleted, you can put it back in there.