The best answer that I can give is to call HP. Even if the CPU can fit into the socket, the laptop's BIOS may not recognize it; which means it will not even boot up.
------------------------------Q9450 |Corsair XMS 4GB DDR 800 | ABit IP35 Pro | HD 5850 | Audigy 2 | Seasonic S12 550 | Cooler Master Centurion 532 | NEC LCD2690WUXi and Planar PX2611w | WinXP
Peace on Earth by means of the destruction of all life on Earth. Reply to jaguarskx