Why is my mirror locked up?

I could see through the viewfinder just fine before I added new batteries. Now all I can see is black and the mirror is locked up. Please help!!!!!

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

crwdns2934109:0crwdne2934109:0

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