While your laptop complaining now does point to the charger being the problem, do keep in mind most laptops charge with 20 V. And annoyingly there are USB-C chargers out there, which can only do 5 V or 20 V, but are missing the 9 V and 12 V (usually used by phones) and the 15 V used for stuff like the Steamdeck or Frame (looking at you, Dell).