Sorry to hear that you had to buy an HP, and sorry you cannot overclock it either.
Quoted for Truth
--------------- The more I read the forums, the more I feel that a number of individuals would be well served by skipping their next GPU purchase in favor of a little "Stress relief" from the local 'Working Girls'"
I guess someone should point out that overclocking "software" is just a pretty front-end for accessing the hardware (BIOS) And since you already know that the motherboard is locked, you shouldn't expect ANY OC'n software to work with your setup.