Alright, well to be safe just don't charge your tablet. Second, you need to get your tablet checked out. Probably there's a lose cable, as in the connection. Pretty sure it has to be one of the three that could be the issue to your problem the , battery, LCD, charging port.
If you have a disc or a USB with Windows 8, then re-image your OS, unless you don't have any important documents. Or unless if your laptop boots up normally loading the OS, refresh your system, which is going to give you the follow options, for what you want to keep and delete.