|What did you use to load Windows 7 with? If it was a regular DVD, you probably have to install Windows 7 (or if not available, Vista) drivers for your system, especially for your main chipset, in order for the features of the mboard to work properly. |
Whenever you load Windows from a regular Windows CD (or DVD) from scratch, after Setup is finished you must load the drivers for the mboard, particularly the main chipset drivers, in order for Windows to have the proper drivers for and information about your mboard hardware, including it's AGP or PCI-E, ACPI, USB 2.0 if it has it, and hard drive controller support. If you have a generic system and have the CD that came with the mboard, all the necessary drivers are on it. If you load drivers from the web, brand name system builders and mboard makers often DO NOT have the main chipset drivers listed in the downloads for your model - in that case you must go to the maker of the main chipset's web site, get the drivers, and load them.
The Lock/Unlock feature is probably part of the ACPI support for the main chipset. Installing the Windows 7 main chipset drivers should fix your problem.