ISA/EISA Class Driver - Windows Vista Service
ISA Driver by Microsoft Corporation.
This service also exists in Windows 10, 11, 7 and 8.
Startup Type
| Windows Vista edition | without SP | SP1 | SP2 |
|---|---|---|---|
| Starter | Boot | Boot | Boot |
| Home Basic | Boot | Boot | Boot |
| Home Premium | Boot | Boot | Boot |
| Business | Boot | Boot | Boot |
| Ultimate | Boot | Boot | Boot |
Default Properties
| Display name: | ISA/EISA Class Driver |
| Service name: | msisadrv |
| Type: | kernel |
| Path: | %WinDir%\system32\drivers\msisadrv.sys |
| Error control: | critical |
| Group: | Boot Bus Extender |
Default Behavior
The ISA/EISA Class Driver service is a kernel mode driver. If ISA/EISA Class 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 Vista startup also fails, and the boot process halts with a Stop error. If you disable this service, Windows Vista will fail to start. Do NOT change this service startup configuration if your computer is working.
Restore Default Startup Type of ISA/EISA Class Driver
Automated Restore
1. Select your Windows Vista edition and Service Pack, and then click on the Download button below.
2. Save the RestoreISAEISAClassDriverWindowsVista.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 Vista installation media.