It looks like you have the Intel® 963Q Express chipset on your MB. From the looks of it HP did not put out a BIOS update. Not sure if there are any limitations to that chipset as far as storage size is concerned. Sorry I could not help you out any further. Although a little more research on that chipset might be in order. I would still lean to the 2 TB size limit. Although, I think it might be the first or second gen of SATA connectors that might have caused the 2 TB limit. Not positive on that one. This might shed some light but not answer your question: http://blogs.technet.com/b/askcore/archive/2010/02/18/understanding-the-2-tb-limit-in-windows-storage.aspx