All the fans stop? Even the CPU fans? I don't think the power supply is doing its job.
What if you just say "yes" to all fans installed - can it run that way, even at full speed?
CPU Fan 1 work normally.
Did not work SYS_FAN1 & SYS_FAN2. I connected them in SYS_FAN3 & SYS_FAN4 - in this connectors fan also not work. Hey! Need test fans - putting they in CPU connector and test. I do it today.