[/i I removed all power cable from the motherboard, put a jumper between pin 15 and 16 in the 20 pin connector, then the fan started and I could mesure the voltage from the power supply, 3.4V, 5.0V and 11.8V.
Is lookes like the conection between pin 15 and 16 on the motherboard is missing. Is it OK for me to put a jumber between this pin in the plug.? Am I going to destroy anything on the motherboard If I do that.?