You need to push it back upward so that its making the connection again. If one side is not connected, simply heat up the other side to free the resistor, then place it back into position carefully and resolder it down. If I were you I would just replace the resistor, if memory serves its a 4.7k resistor 0201 size. Hot air station is easiest to get it installed, otherwise remove it with your iron then put a new one on. This resistor often times go bad from heat (terminal can come off). When it goes bad you'll get a pink screen on boot.