OEM computers are pretty limited to begin with, especially when it comes to the CPU. Laptops are even more limited and sometimes you can't even change out the CPU because the chip is soldered onto the motherboard. I looke up your computer on HP's website and couldn't find any CPU compatability list. From what I can tell though your laptop seems pretty old. It's running XP with a crappy slow processor. IMO it's not even worth upgrading I would just get a new laptop.