So I'm having an opposite problem than a previous thread: when I power up the board, the fan slowly ramps up to full power and stays there permanently. According to lm-sensors the core temperatures are only around 30-40 C, which are well below the AC0/1 limits I've set in the BIOS. I've tried a couple of different fans, disabling the BIOS temperature limits and re-flashing 1.03 but nothing seems to work. Any ideas? I wonder if the BIOS is somehow using an incorrect temperature/threshold because the slow ramp-up to full RPM only happens if the board has been off for some time; if I turn it off and on without letting it cool, the fan immediately goes to full throttle.