I have bought a new A330Ion board:

ASRock > Produkte > A330ION

Everything is fine, but if I set the CPU-Fan from "Full On" to "Automatic", the computer powers off in less than one minute, regardless of setting of the temperature or Level for the fan. I replaced already the fan and tried bios version 1.20 and 1.40. The fan speed and temperatures are looking fine in bios and OC Tuner.

Any ideas?

Beste regards