The sisagp.sys file is a device driver. A device driver allows a piece of hardware or a device to get connected to the computer in order for the hardware or the device to be operated. The file sisagp.sys belongs to the application SiS NT AGP Filter. Windows NT, the system under which SiS NT AGP Filter runs, is a version of the operating system developed by Microsoft Corporation. As a device driver, Sis NT AGP Filter belongs to the category of kernel drivers. Kernel drivers are devices that use the program native to Windows NT called API. API stands for Application Programming Interface. Kernel devices are written in the kernel code and can access the operating system and computer memory directly. They need to run in a stable environment because if one kernel driver crashes, the entire system crashes along with it.

Most non-system processes that are running can be stopped because they are not involved in running your operating system. sisagp.sys. is used by SiS NT AGP Filter, If you shut down sisagp.sys, it will likely start again at a later time either after you restart your computer or after an application start. To stop sisagp.sys, permanently you need to uninstall the application that runs this process which in this case is SiS NT AGP Filter, from your system.

After uninstalling applications it is a good idea to scan you Windows registry for any left over traces of applications. Registry Reviver by ReviverSoft is a great tool for doing this.

The ReviverSoft experts have not yet reviewed sisagp.sys

A process usually a part of an installed application such as SiS NT AGP Filter, or your operating system that is responsible for running in functions of that application. Some application require that they have processes running all the time so they can do things such as check for updates or notify you when you get an instant message. Some poorly written applications have many processes that run that may not be required and take up valuable processing power within your computer.

We have not received any complaint about this process having higher than normal impact on PC performance. If you have had bad experiences with it please let us know in a comment below and we will investigate it further.

The first thing you should do if sisagp.sys. is causing errors on your computer is to run a Windows registry scan with Registry Reviver If you are still seeing errors after this you should uninstall the program that sisagp.sys, belongs to, in this case SiS NT AGP Filter