recently i obtained a ATX power supply from an old computer of mine to power my RAMPS 1.4 board. I followed a diagram on the reprap wiki showing how to connect the power supply to the board, with the yellow cables (in the + terminal) and black cables (in the - terminal) alternating. I then connected the board to the computer using the given connector. Once everything was connected, I plugged the ATX power supply into the wall socket and turned everything on, and the computer turned off. I immediately disconnected the power from the wall and unplugged the board from the computer. The board was very hot so i let it cool down for a couple of minutes and then connected it back to the computer, except now the RX LED is red and I can't connect to it using pronterface. Did i fry the electronics, or is it something else. The computer is working fine, but i'm not sure about the board. Please help.
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