You can also refer to this article regarding the issue: Update the BIOS. Download and install the latest BIOS version on the Support Site: It is due to the battery charge self-protection feature. If Conservation Mode is turned off and the AC adapter is added when the battery capacity drops from 100% but is still more than 95% (95% - 100%), the battery will not start charging. Have you tried turning off the Conservation Mode? This message indicates that Conservation Mode is turned on. What is the percentage of the battery when it says plugged in not charging?
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