I'm really unexperienced when it comes to computer. But my pc was shutting off and on and off forver. so i sent it in for repair and they said it was all fine. I got it back same problem occurred i've sent it in for repair about 6 times now. They cant find the problem. But i finally opened the pc and looked inside myself for the first time. And i see a loose cable connected to my 750W battery... Like, its connected to the power supply but it doesnt lead anywhere. I has 4 pins.. and i can't find out where to plug it in. I mean if it is plugged in the power suplly it must be important right? Like i still can't get the pc to be on for more than 4 seconds,