Hello bradnick,
Welcome to the HP Forums! I hope you enjoy your stay!
I understand you are looking to upgrade the CPU on the computer. I will do my best to assist you! In your best interest, I will provide this product's maintenance and service guide.
You can use this manual to determine what you can replace and what is supported. Please use this manual when you have any inquiries like this.
Thank you for posting on the HP Forums! Have a great day!
Mario