I built a desktop and I was trying to boot it up but it won’t go to bios and I am getting no signal through the mouse, keyboard, speakers and monitor. It turns on and runs for a few seconds then off again if I have the 4 pin ATX 12V connected to the power supply and doesn’t turn off at all if I don’t, but it still won’t boot BIOS. I have re done all the connections to the power supply and re tried and I have gotten nothing. I am planning on getting a new cr 2032 battery for my motherboard to see if that is the problem