Computer turns off

[kaedinsmom]

Hello,
HELP! My Computer Turns On For 3 Seconds, Then Shuts Off i have a new battery and charger for my gateway laptop

 

[poweruser_24]

*Take out the battery,
*Remove main supply,
*Hold power button down for 30 secs,
*Put only power supply in, do not put battery in
*Turn laptop on
*Put the battery in.

 

[kaedinsmom]

*Take out the battery,
*Remove main supply,
*Hold power button down for 30 secs,
*Put only power supply in, do not put battery in
*Turn laptop on
*Put the battery in.

tried it does not come on at all