I also had this problem. I am also using a Dell Inspiron 5577 laptop. I also updated the to the latest build of windows.
in the bios i set the charging to standard where it was set to adaptive.
The light on the laptop does not go amber to show it is charging but the level indicator is now going up
hope this helps!
I am currently experiencing this one now. How do I update the charging from adaptive to standard? Many thanks!
Same problem, but with Surface Pro 7.
Charger LED lights up, battery icon shows the plug, but it's not actually charging. Even when the charger is disconnected, the battery icon still shows battery + plug (charging) icon.