PCI Bus Driver Service Defaults in Windows 10

NT Plug and Play PCI Enumerator by Microsoft Corporation.

Default Settings

Startup type:Boot
Display name:PCI Bus Driver
Service name:pci
Service type:kernel
Error control:critical
Group:Boot Bus Extender
Path:%SystemRoot%\System32\drivers\pci.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\pci

Default Behavior

PCI Bus Driver is a kernel device driver. In Windows 10 it is starting by the operating system Boot Loader as a part of the driver stack for the boot volume. If PCI Bus Driver fails to load or initialize, Windows 10 attempts to record the error details into Event Log and restart the PC, using the Last Known Good configuration. If the Last Known Good configuration cannot be applied or working improperly, Windows 10 startup process halts with a Stop error. If you disable or delete the pci service, Windows 10 won't start.

Restore Default Startup Configuration for PCI Bus Driver

1. Select your Windows 10 edition and release, and then click Download.

2. Save the Win10_pci_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The pci service is using the pci.sys file that is located in the %WinDir%\System32\drivers folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 10 installation media.