Thank you for posting on the HP Support Community.
I appreciate your efforts to try and resolve the issue. this sounds like hardware related issue with the DC in charging port and in order to fix this issue, your computer needs to be serviced. As we have limited support boundaries in the support community as of now.
I would request you to reach out to our Support and our Support Engineers should be able to check the available service options in order to diagnose the computer physically. HP Support can be reached by clicking on the following link: www.hp.com/contacthp/
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