My XPS 13 9500 was at 95 percent battery when I restarted it. Now it won’t boot. I open it up and the keyboard lights up and caps lock comes on but the dell logo does not appear in the screen. Not quite sure what to do.
Also, check System Diagnostic Lights (LED codes) in your XPS 9500 service manual. This might help you to diagnose the no boot problem.
Support for XPS 15 9500 | Documentation | Dell US
This boot problem happens only on battery power?