after pressing start button only show Lenovo logo then laptop cnt boot

When I start my laptop it's not booting only Lenovo logo shows in display then show black display and stoppable cursor..

crwdns2893858:0crwdne2893858:0 crwdns2893862:0crwdne2893862:0

crwdns2894050:0crwdne2894050:0

crwdns2889612:0crwdne2889612:0 0
crwdns2892346:0crwdne2892346:0