Why does my laptop screen keep going off?

It goes off , if i leave it idle for 30 secs

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

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0

crwdns2944067:06crwdne2944067:0:

Does it come back on when you do something? It stays working if you do not give it time to stay idle?

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

no it just shuts down on start up it says need new battery is this the answer

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

it just shuts down on start up it says need new battery is this th answer if so which battery do i need

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

Ok Im looking up your battery now...

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

Oh wait the not the OP speaking.

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

crwdns2934273:01crwdne2934273:0

crwdns2934285:0crwdne2934285:0