From what all I read I would agree that you have a dead motherboard, your PSU is good, I doubt that you GPU is in any danger, but there is a strong possibility that your CPU could have been damaged. You just won’t know until you isolate the problem with a new motherboard. Depending on your built make sure you get the correct socket type. You can find a casual consumer motherboard on NewEgg anywhere from $50 to $100 depending on what your budget is. If you having trouble finding a new board or just general questions just let us know and we can assist you further. I wish you luck my friend.