This is exactly my problem. How hard is it to resolder?The most common issue with laptops is the charging port gets loose and needs to be resoldered/replaced so that it makes good contact with the motherboard again. Usually you can tell this is the problem when you plug it in and wiggle it next to the port and the light flickers on and off.
I see. Does there exist a tutorial anywhere by any chance?You have to take the motherboard out to do it. If you have no experience, you are better off taking it in to have it done.