I have a HP Pavilion dv6-6121se here are its specs i recently upgraded to windows 8 pro and my games got slower and in game options i could only select directx 9 until later i got battlefield 4 and it says gpu cant buffer frame and it said gpu was intel hd 3000 i checked system info and saw it recognized my hd 6400m series card as 7400m series this wasnt right because i had 6400m as hp said in its page and in win7 the catalyst software was there but it is not there now. so i downloaded win8 driver from this page click here for it but nothing worked.
Normally laptop drivers are provided by the manufacturer. I notice on your lappies support page only Windows 7 driver is available. I would still give that a try though but first right click it, choose properties and then compatibility. Change to win 7 and hopefully you should be ok.
Installed successfully, system recognizes it but when i play battlefield 4 it still doesn't work and says gpu intel hd 3000 and no improvement in gaming.
Ok I will check and I forgot to say in the catalyst software I can't do any settings it only says display no other tabs like power switchable graphics.