When such case takes place, please pay attention to your ambient temperture. If you are in somewhere with very high temperature, the battery will automatically protect itself after long time using, and the laptop startup program would stop working. At this moment, please restart your laptop after 1 hour.
Another possibility is some problems took place with your laptop during charging process, because laptop charging circuit is easy to cause problems when taking charge. Please try your orginal battery on the laptop and see if it works.