HP Proliant Management Controller Driver (Device ID: HPQ000B)

Today, we are discussing about a common driver issue with HP 100 Series sever. We have installed Windows 2008 on a HP ML150 G6 Server and found that one of the driver is missing in Windows device manger. Whenever you come across with driver issue (Or unknown device in Device manager), we need to find the Device IDs/Hardware IDs of the unknown device . So we have checked the Hardware Ids of this unknown device and we found that it has the ID: ACPI\HPQ000B

I did some search on Internet/HP forums and found that the above said device ID is for HP ProLiant 100-Series Management Controller. Most of the HP Proliant 100 series servers are shipped with HP Lights-Out 100 (LO100) and it needs a driver to function properly. In Device manager, this device is listed under “System Devices” category (When driver is installed). This device will be listed under Unknown device when no drivers are installed. 
Another common driver issue with HP Proliant server is the NULL IPMI driver. The NULL IPMI driver is dependent on Lights-Out driver.

HP ProLiant 100-Series Management Controller can have below said Hardware Ids:

ACPI\HPQ000B\0
ACPI\HPQ000B
*HPQ000B

Where can I download Drivers:

HP Driver download page will list HP ProLiant 100-Series Management Controller driver. However, I am listing the HP ProLiant 100-Series Management Controller drivers for all versions of Windows:
Windows 2003 32 bit, click here
Windows 2003 64 bit, click here
Windows 2008 32 bit, click here
Windows 2008 64 bit, click here
Windows 2008 R2, click here