I tried starting my computer one morning and it woudnt start. I opened the case and tried to see what the problem was, but could not find anything. I then disconnected everything, even the power supply. Connected then only the power supply. When I push power button the fans start runnning and then stops again. I disconnected the atx 4pin connector and push the power button and the cpu fan starts running. When I put the atx connector back nothing happens. Any suggestions please.