Sounds like either a power issue or OS issue.
First replace power adapter and see if that resolves your isssue. The unit will need to charge for a while, so be patient.
It also can be an OS issue. It is also very possible that your computer just cannot access any OS (operating system) files. After restarting, press the F11 key or start up the Notebook with the F11 key held down to launch Power Recover.
You can also try to access your BIOS by pressing F2 key at startup.
Check there if your computer recognizes the drives etc.
Let me know what you find. Good luck !