Msisadrv Service Defaults in Windows 10

ISA Driver by Microsoft Corporation.

Default Settings

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

Default Behavior

Msisadrv 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 Msisadrv 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 msisadrv service, Windows 10 won't start.

Restore Default Startup Configuration for Msisadrv

1. Run the Command Prompt as an administrator.

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

sc config msisadrv start= boot
sc start msisadrv

3. Close the command window and restart the computer.

The msisadrv service is using the msisadrv.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.