Brand new, 3-day old gaming PC won't boot up, fans turn on and aesthetic lights on motherboard turn on but nothing else. No power to keyboard and mouse and no signal to the monitor. There are no flashing lights or any beeps whilst trying to start up the computer. Just before it happend I was playing a game the computer completely froze so the only way I could turn it off was by holding down the power button. Come back to the PC an hour later and it starts up as normal but takes me to a error screen first saying something about not shutting down properly, it lets me to continue with the start up and after a minuet the screen went blank and now nothing but the fans will work.