When i went to turn on my pc this afternoon after school it was bad news. All the fans and the lights on the motherboard turn on. My motherboard is an asrock extreme 4 970. My GPU is a XFX radeon HD 7870. The problem is that it doesnt display on the monitor. Everything worked the day before, but it wont work today. I've unplugged the GPU and tried booting on with only 1 stick of ram inside. I will be try removing all the components then re-install them tomorrow. Please help it would be much appreciated. Also power button will turn on pc, but wont turn off pc now.