Zerotherm Nirvana is stuck in my GIGABYTE EX-38 DS4. 3 of the screws into the backplate come out, but the 4th one is stuck. The grove in the backplate holding this screw moves along with the screw, so the screw does not move out. I have removed the motherboard from the case and tried this. it does not work. So the cooler and cpu are embedded in this mobo forever now These are the kind of screws that go into the backplate Here is what they screw into And here is the back of the backplate Wat to do now ?