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 of Ql40xx
1. Run the Command Prompt as an administrator.
2. Copy the command below, paste it into the command window and press ENTER:
sc config ql40xx start= demand
3. Close the command window and restart the computer.
The ql40xx service is using the ql40xx.sys file that is located in the C:\Windows\system32\DRIVERS directory. If the file is removed or corrupted, read this article to restore its original version from Windows 7 installation media.