Please, provide more information regarding the issue that you have. The model of your laptop is not the type of processor that the HP laptop has, but has to be something else. :) Usualy it's a name or a combination of digits and letters. Have you contacted the HP support already? If you haven't, then you should probably do that. Let's see what they have to say.
You said you changed the battery. Is the new battery compatible with the laptop, did you check that? If you did, that I suggest that you go to the power options in the control panel and check what the setting of the power consumption are. Please, verify that the laptop is operating at Balanced mode or Maximum performance and not on Eco mode.