It's obvious that you broke something. From what I can tell your hard drive and motherboard are probably dead. I think it's better to sent it to a repair/service shop because it needs a lot of troubleshooting and it may need a lot of new parts that you may not have in your possession such as a new motherboard, CPU, RAM, GPU etc. You won't be able to do that yourself. There they'll try each part separately and make sure that is working before proceeding to the next one.
All right, thank you. I'll take it to a repair shop. This really sucks. I just hope my CPU and GPU are okay. I can't afford to replace those.