Msisadrv - Windows 7 Service
ISA Driver by Microsoft Corporation.
This service also exists in Windows 10, 11, 8 and Vista.
Startup Type
| Windows 7 edition | without SP | SP1 |
|---|---|---|
| Starter | Boot | Boot |
| Home Basic | Boot | Boot |
| Home Premium | Boot | Boot |
| Professional | Boot | Boot |
| Ultimate | Boot | Boot |
| Enterprise | Boot | Boot |
Default Properties
| Display name: | Msisadrv |
| Service name: | msisadrv |
| Type: | kernel |
| Path: | %WinDir%\system32\DRIVERS\msisadrv.sys |
| Error control: | critical |
| Group: | Boot Bus Extender |
Default Behavior
The Msisadrv service is a kernel driver. If the Msisadrv 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 7 startup also fails, and the boot process halts with a Stop error. If you disable this service, Windows 7 will fail to start. Do NOT change this service startup configuration if your computer is working.
Restore Default Startup Type of Msisadrv
Automated Restore
1. Select your Windows 7 edition and Service Pack, and then click on the Download button below.
2. Save the RestoreMsisadrvWindows7.bat file to any folder on your hard drive.
3. Right-click the downloaded batch file and select Run as administrator.
4. Restart the computer to save changes.
Note. Make sure that the msisadrv.sys file exists in the %WinDir%\system32\DRIVERS folder. If this file is missing you can try to restore it from your Windows 7 installation media.