Hi,
It is possible that the charger is not properly connected to the charging port of the laptop. Make sure to re-plug the charger, and see if a charging notification will pop-up. If not, you can try to use other charger and test your own charger to other laptop.
Refer to your laptop's user manual to check for battery troubleshooting. You can also contact the laptop manufacturer for further assistance.
Kindly post back if you have further concerns.