|Good luck with that. Many compaq notebooks weren't made user friendly in terms of upgrading the processor. The vast majorty of compaq notbooks don't have a cpu cover at the bottom so that a user is able to get to it easily. You have to take apart half of your notebook to get to the processor. If yours doesn't have a cover at the bottom, then i'd highly advise you to take it somewhere and have them take it apart.|
But like jam said you have to find what your model is and then find the motherboard model.
Iron Sharpens Iron.