crwdns2934241:0crwdne2934241:0 Hampter

crwdns2934249:0crwdne2934249:0:

You seem to have loosened the heat sink (that metal part) if the screw got trapped onto the motherboard than it is possible that you damaged the motherboard (really bad). You could also try to check the connection to the GPU and the actual card itself for damage and the fragile ribbon cables around it

crwdns2915684:0crwdne2915684:0:

open