Situation: The client has a Thinkpad X1 Yoga with full charged battery. He can’t turn on the laptop with power plugs in and full battery charged. When pressing the power button, the power light is not on. When you plug the power on, the power light on for sends and disappears.
Resolution: reset battery
1 Remove Laptop bottom cover.
2 Disconnect two battery connections.
3 Disconnect coin-cell (CMOS) battery.
4. Disconnect the cable in the power button.
5. Press power button a few times to drain capacitors
6. Put all connections back and try again.
