Hi jjfader,

You have mentioned that the light on the AC Adapter goes out when you plug the AC Adapter to the computer. Is that correct? Do you see a light on the AC Adapter without plugging it in to the computer?

If the light goes off, then most likely the issue is with the motherboard and might have to be replaced.

However, this system comes with a separate DC-in port. You may try replacing the DC-in port first and check if the issue persists. Else, the motherboard might require replacement.

Please reply if you have any questions.

Thanks and Regards,
Appu S