Somehow erased windows on my acre aspire7741z-4643

How can I retrieve windows, screen comes up - install windows And then back to restart application. Continues to spin (lights are on but nobody is home)

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

crwdns2934109:0crwdne2934109:0

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