What do I do if your lenovo thinkpad x390 stops responding?

1. Press and hold the power button until the computer turns off. Then, restartthe computer.
2. If step 1 does not work:
• For models with an emergency reset hole: Insert a straightened paper clip into the emergency reset hole to cut off power supply temporarily. Then,restart the computer with ac power connected.
• For models without an emergency reset hole:
– For models with the removable battery, remove the removable battery and disconnect all power sources. Then, reconnect to ac power and restart the computer.
– For models with the built-in battery, disconnect all power sources.
Press and hold the power button for about seven seconds. Then reconnect to ac power and restart the computer.

Today's promotion: new lenovo thinkpad x390 yoga 20nn00fmmh 11.55V 4211mAh laptop batteries

Voltage: 11.55V
Capacity: 4211mAh (49Wh)
Battery cells: 3-cell
Chemical: Li-ion
Battery Color: black
Condition: new original battery
Warranty: 9 months

The battery is available here: https://www.storebattery.co.nz/lenovo-thinkpad-x390-yoga-20nn00fmmh-11.55v-4211mah-laptop-battery-store-for-new-zealand-p-460939.html