Where did my other post go? Anyway, something bad with your power delivery system. It requires a custom part and diagnosis, and fixing. Costing way more than a whole new better PC. Also, good news is that your Hard Drive is still alive. Fish it out and salvage the data, and use it for something else. Then, you can keep the rest, throw it away, or sell it in some creative way. Laptop RAM sticks can sell for a fair amount you know...
Oh, and your battery is still alive. It's the computer's problem not the battery.