Dell XPSL502X -AC Power adapter type cannot be determined. Plugged in, not charging

Lots of websites tell you to replace your adapter, or your battery.

Use Throttlestop to prevent the cpu throttling
https://www.techpowerup.com/download/techpowerup-throttlestop/
Set multiplier to 25 or 26, (the machine drops it to 8 when the adapter is not detected)

Try this first, it worked for me.
https://www.youtube.com/watch?v=XcDvp2A7Fss

1. Power off machine
2. Remove battery
3. Remove AC cord
4. Unplug AC cord
5. Leave everything off and unplugged for a couple hours to ensure all charge is discharged, and everything cools to room temperature
6. Plug in AC cord to wall
7. Plug Ac cord to PC
8. Turn on PC
9. Right click on My Computer>Properties>Device Manager>Batteries
10. Uninstall all Microsoft - devices
11. Shut down machine
12. Unplug adapter from wall and pc
13. Put the battery back in (Make sure it is cool, hot batteries will not charge)
14. Plug in adapter to wall and pc
15. Turn machine on
16. At this point, the battery should show that it is charging
1. If this works, then nothing is wrong with your hardware
17. When you turn back on the machine, it will reinstall the ACPI drivers
18. This may cause the PC to stop detecting the adapter again

Option2: Let everything cool and discharge (This also continues to work for me after the first method failed)

1. Unplug the AC adapter from the laptop and wall
2. Remove the battery from the laptop
3. Hold down the power button on the laptop for 30 seconds to remove any residual charge
4. Leave them all overnight to cool completely
5. Put battery in laptop
6. Plug adapter into laptop
7. Plug adapter into wall
8. Battery light should come on to indicate charging without having to turn on laptop