Need help Diagnosing my acer nitro 5 gaming laptop

Two years ago I bought a acer nitro 5 from big box store and up until last week was runnning decently well considering the battery life is horrible but it is what it is being a cheap gaming laptop and now I’m getting the battery charging light and the computer on light flashing at me and unplugged the power cord and like a dummy touched the part that goes in to the laptop and now I’m here try to figure out what i need to do or if it’s useless to try and save it PLEASE HELP