Isapnp Service Defaults in Windows 10

PNP ISA Bus Driver by Microsoft Corporation.

Default Settings

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

Default Behavior

Isapnp is a kernel device driver. In Windows 10 it is starting only if the user, an application or another service starts it. If Isapnp 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 isapnp service, Windows 10 won't start.

Restore Default Startup Configuration for Isapnp

1. Run the Command Prompt as an administrator.

2. Copy the command below, paste it into the command window and press ENTER:

sc config isapnp start= demand

3. Close the command window and restart the computer.

The isapnp service is using the isapnp.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.