Problem with laptop HP nc6320

[juju1970]

Hello. I have a laptop HP nc6320. With battery it works perfectly. But, if I connect power supply it began to break and to work very slowly. For example if I am looking a movie it change the frames on 3-4 sec. I checked with another power supply and with another battery, but is same. That is meaning that have problem inside of laptop. Is it somebody have this problem and do you have idea from what can be. Thank's in advance.