Hi. I have just recently built a computer, and I tested everything and it works. You can hear the hard drive make its humming noise, the cd tray opens, and when I plug my devices into every port, (like a phone) it says they are charging. My computer displays no on light, and there is no signal to the computer... I looked online about how to wire the type of PC I built, and I have everything plugged in right! I took out the CMOS battery, cleaned the ram, and disassembled and reassembled the computer... Should I give up, or is there hope???