Windows XP Services

PnP ISA/EISA Bus Driver - Windows XP Service

PNP ISA Bus Driver by Microsoft Corporation.

This service also exists in Windows 10, 7, 8 and Vista.

Startup Type

Windows XP edition without SP SP1 SP2 SP3
Home Boot Boot Boot Boot
Professional Boot Boot Boot Boot

Default Properties

Display name:PnP ISA/EISA Bus Driver
Service name:isapnp
Error control:critical
Group:Boot Bus Extender

Default Behavior

The PnP ISA/EISA Bus Driver service is a kernel driver. If the PnP ISA/EISA Bus Driver fails to load or initialize, the error is logged and the computer attempts to restart with the LastKnownGood configuration. If the LastKnownGood configuration fails, Windows XP startup also fails, and the boot process halts with a Stop error. If you disable this service, Windows XP will fail to start. Do NOT change this service startup configuration if your computer is working.

Restore Default Startup Type for PnP ISA/EISA Bus Driver

Automated Restore

1. Select your Windows XP edition and Service Pack, and then click on the Download button below.

2. Save the RestorePnPISAEISABusDriverWindowsXP.bat file to any folder on your hard drive.

3. Run the downloaded batch file.

4. Restart the computer to save changes.

Note. Make sure that the isapnp.sys file exists in the %WinDir%\system32\DRIVERS folder. If this file is missing you can try to restore it from your Windows XP installation media.

Yea, though I walk through the valley of the shadow of death, I will fear no evil: for thou art with me; thy rod and thy staff they comfort me.