Replaced dc jack on laptop... still won't power on.

[lazerorca]

hi guys. i am working on a computer at the moment. the computer is not turning on. the guy that had it before he brought it to me bought a new battery for it. the new battery worked until it lost charge. so I bought a new dc jack for the laptop and put it in. once I put it in, I checked the pins going to the laptop battery. two of them are receiving power 3.5 V. any clues as to what I should do next?

 

[1shado1]

You've obviously tested the ac adaptor.

 

[lazerorca]

yepper I tested the ac adapter

 

[1shado1]

Will the laptop power up with the battery out, and just the ac adapter plugged in?

 

[lazerorca]

laptop will not power up with the battery out and just the ac adapter plugged in