crwdns2934241:0crwdne2934241:0 domi

crwdns2934249:0crwdne2934249:0:

right after pressing Power, press Command+Option+R. If your OS X Version is above (i'd think Lion and above) youll be able to reinstall from there without disc.

crwdns2915684:0crwdne2915684:0:

open