When I turn on my PC, all of its lights and fans turn on. However nothing else turns on, including my keyboard, mouse, or headset and no display on the screen. I have a mixed build which some parts came with the tower some I put in myself. Specs are a 1050 TI gtx msi gpu, a75a-g55 mother board, i know the CPU is a tri-core AMD and my power supply is a total of 520W. I may also say that there is no POST or Beep code.