Cant get battery to charge or mmmmmm

Hello,

I have a toshiba, newer about 1 1/2 years old. I got it from a family member who didnt want it. Any ways. This is my problem in detail...

Computer will not turn on with out battery, i have tried 2 different power sources ac/dc.
When you put a good battery in it says that it is charging, and stays that way though in the beginning you see the flashes of the battery charging and that stops though it still says plugged in and charging. The moment you take the battery out the comp shuts off. When you have the power supply plugged in only the wireless light flashes orange. I have taken a meter to the internal power supply and it reads at the male end 19.9 at the female end 19.9
well That is it if some one can help me please do so.
My thoughts are the internal might be bad but would it put out 19.9 if it were bad plus is 19.9 the same as 19v which it says it needs.

Thanks for any help.