Arcsas Service Defaults in Windows 7
Adaptec SAS RAID WS03 Driver by Adaptec, Inc..
Arcsas is a kernel device driver. In Windows 7 it won't be started if the user doesn't start it. If Arcsas fails to start, Windows 7 attempts to write the failure details into Event Log. Then Windows 7 startup should proceed and the user should be notified that the arcsas service is not running because of the error.
Restore Default Startup Configuration for Arcsas
1. Select your Windows 7 edition and service pack, and then click Download.
2. Save the Win7_arcsas_Service_Startup.cmd file to a local storage device.
3. Run the saved file as an administrator.
4. Restart the computer.
The arcsas service is using the arcsas.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 7 installation media.