Hi,
Welcome to Fixya. Since the Battery and the AC Adapter is new there's no way it won't charge. The power is running to the charger as indicated by the green light however the problem seems to be coming from the motherboard since the socket of the AC adapter on the laptop is connected to it. If you still have the old battery try to charge it using the new AC adapter and if still won't then most likely the board is bad due to the bad socket of AC adapter which is embedded to it. If the system still have warranty then dell can repair it free of charge if not you need to bring it to a Service Center to check if they can repair the socket or replace the whole board.
If you have questions please let me know. Thanks for using Fixya
Here's an example of a bad power connector of a motherboard that needs to be replaced.
It seems to be that you need to check it or someone need to check it
And here's the service manual if you need to disassemble the system.
Dell Inspiron 1100 Service Manual
Thanks
Christine - I see so it means that the problem is on the board itself. This is not a quick fix it's either you need to send it to a service center so that they can check what is causing the problem aside from the power connector and fix it or replace the motherboard with a new one. I have a suggestion it is better to bring the machine to a Dell service center since they are trained and familiar with the part of the motherboard and it is easy for them to fix it.
They can also advice you whether to repair the motherboard or replace with a new one. Sometimes if the board become faulty and they repair it, It can cause other problems due to wear and tear. Thanks
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Send it to a company that said they replace plugs on board. It was charging occasionally before sent I thought it was the plug on board now it is not working at all.
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