Dell Inspiron 15-3567 Laptop
A few months ago, my AC Power Adapter (charger) died I purchased 2 of them from the Dell Website.  Plugged one in and all was well.  The other is a backup and never been used as of today.

A week ago, I started to get the warning that my AC Power Adapter Type cannot be Recognized every time I would start up my laptop.   It's the same Dell adapter that was working and the suggestions are to replace the adapter with a Dell Adapter (yes, it's already a DELL) and do some battery saving settings which are already in place.  Now, this started just after running Support Assist and it said I should update my BIOS which I allowed.   This may or may not have something to do with this.   

I tried my backup - never used - Dell AC Power Adapter to see if the current one was the issue and got the same warning.   So that says it's not my specific charger.

The Adapter (charger) is able to power the laptop (using it to type this right now) but the batter is no longer charging and is slowly discharging even with the charger plugged in.

I ran the BIOS diagnostics and it just says there is a problem with AC Power Adapter and it's UNKNOWN. 
I have run Support Assist and no issues

I am absolutely non tech savvy so may not be using the correct terms.   

This laptop is way out of warranty.

Any ideas????????