Answer to: no display, only screen glows,over heating problem to display cardtry doing a re-flow to the BGA chip(the video ship), make sure you apply enough soldering flux between the mother board and the chip. Use a heat gun in a circular motion with a distance of 2 to 3 inches on top of the chip. Use aluminum foil to completely cover the mother board and only expossing the bga chip. Hope this helps! Clean the heat sink completely to prevent overheating and update your bios.