The lower half of my screen, & physical keys are not responding.

Physical keys light up, lower part of the screen lights up & looks no diffrent from the other working part of the screen. Anyone know the problem, and it's possible fixes/est. on the repair? Thank you!

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 3
crwdns2934285:0crwdne2934285:0