Answer:
Step-by-step explanation:
There are two reasons as to what could have happened with your laptop. The first one is that your laptop was installing a critical windows update which got corrupted when the laptop's battery died causing windows itself to become corrupted. In this case, you would need to format the hard drive and reinstall windows. The second reason could be that your hard drive is failing and not allowing Windows to load or properly be installed on it. In this second scenario you would need to buy and replace the hard drive.