So I changed out the case of my girlfriends computer. I moved everything over but when I went to change the thermal paste out. The Cpu came out with the heatsink. I took it off carefully and cleaned the thermal paste off. Went to replace the cpu to the socket after fixing the bent pins. The cpu went in fine but I notice to set the retention arm down there is almost 0 force needed. Also the cpu is movable. It's an AMD Athlon II I believe. I got it in and installed the heatsink and turned it on. Everything works.. but no display. So I took it apart once more and the cpu again came off with the heatsink. Fixed the pins again and reinstalled it and still no force on the retention arm. Gpu's working fine.. So not sure what I can do to fix it.