Try not to yell on the internet as you type. Take a deep breath and type like you would normally talk to someone directly next to you (IE not in all caps).
If your control panel is not displaying then it is most likely a power issue. Especially since you already swapped the control panel and formatter and had the same results. Memory problems or formatter issues would still bring you to the HP screen as the printer attempts to boot. DC controller is your best bet, something basic isnt allowing your pritner to boot properly enough to power on the control panel.