Update = After verifying ownership and completing troubleshooting, a DELL agent setup service.
I have the same problem as this XPS 15 7590. Win 11 and Dell's drivers are up to date. The laptop will start on battery ONLY until the Dell logo appears then shut off. It does not boot to BIOS. The laptop work flawlessly plugged in. The battery works perfectly when and if i plug the laptop before i use it on the battery alone and remove the charger's plug afterward. Almost like it needed a sparkle of energy to go further than BIOS.
XPS 15 9570, not booting on battery only?