Ql40xx Service Defaults in Windows 7

QLogic iSCSI Storport Miniport Driver by QLogic Corporation.

Default Settings

Startup type:Manual
Display name:Ql40xx
Service name:ql40xx
Service type:kernel
Error control:normal
Group:SCSI Miniport
Path:%SystemRoot%\system32\DRIVERS\ql40xx.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ql40xx

Default Behavior

Ql40xx is a kernel device driver. In Windows 7 it won't be started if the user doesn't start it. If Ql40xx 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 ql40xx service is not running because of the error.

Restore Default Startup Configuration for Ql40xx

1. Select your Windows 7 edition and service pack, and then click Download.

2. Save the Win7_ql40xx_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The ql40xx service is using the ql40xx.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.