Lenovo legion 5 pro didn’t power on, only led, suddenly it caught fire?

Saw a comment that said that by changing the ram ports I could maybe get it on again, was doing that, procedure was unplugging battery, then doing everything, plugged battery again and just when I was only putting screws in, it got a sparkle and it caught fire, I didn’t even touch that zone like, at all, what the hell happened?

Laptop is off warranty, can I do something? I’m scared of plugging the battery again, also I’m a student and this is the only thing I’ve got, I’ve got no money for another one like it…