The pci.sys process is also known as the NT Plug and Play PCI Enumerator and it is owned by Microsoft Corporation, belonging to the Microsoft Windows operating system. There is very few information to be gathered regarding this software. It is a Microsoft signed file and seems to be a compressed file. It is digitally signed from Microsoft Windows and can be started and stopped in the Control Panel. It has no visible windows and it is a Windows system file. It has the technical security rating of 3% dangerous, making it very safe for the user to execute within his or her PC system. However, since it is relatively unknown, the user must be cautioned of the possible dangers that it can present. It does not indicate that it is especially convenient for the user to maintain in his or her computer system, however, it is still advisable not to meddle with the process unless it is causing specific problems for the user. Tampering with the process might make the user suffer from unnecessary inconveniences.

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

A process usually a part of an installed application such as NT Plug and Play PCI Enumerator, 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 pci.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 pci.sys, belongs to, in this case NT Plug and Play PCI Enumerator