That means you still have warranty. Back to the shop and let them check if it's the adapter, the battery, the motherboard that needs to be replaced or a software/settings issue.
Hi as of yesterday my HP dm4 laptop has stopped charging saying the ac adapter is "plugged in, not charging". I've looked around the internet for a solution and the two most common ones seem to be to uninstall and reinstall the battery using device manager (which I did to no avail), and to calibrate the battery but that requires me to charge it first so that idea's out the window as well. any more suggestions would be greatly appreciated. btw the laptop is only about 4 months old bought new not used.