My PC just randomly started up in some sort of "phantom mode"?

My PC just randomly started up in some sort of "phantom mode"?

So I moved my PC and I plugged it back in again, once I plugged in the monitor, The PC went into this "phantom mode" The PC's fans are full speed, No display or sound, The power button light is not on and the power button does nothing when pressed, DVD eject button works green LEDs on the Motherboard and PSU is on. I never even pushed the power button! the HP logo is not lit up either. what's going on? I've never seen this happen.