Laptop plugged in, but not charging:
This was a really annoying issue, since I had bought the laptop just 3 months back.
I searched in HP forums, (mine is a HP laptop), there were a range of suggestions
1) Uninstall Battery adapter from Device manager
2) Restart !!
3) Re-install the power manager software
4) Replace the battery
5) Contact the manufacturer
Mine has AMD processor, but the laptop was very hot; something very unusual.
Silly reason: the laptop was placed on a soft couch; there was absolutely no ventilation.
I don’t see a connection between ventilation to battery charging; Anyway, the below worked.
Solution: Lifted the laptop so that the air vents on the bottom, sides are not blocked. It started charging !!