As far as the message about the fan, I have the same problem when I first boot up after the PC has a chance to cool to room temp, the CPU fan isn't spinning at the minimum required RPM for my motherboard, so I get a warning. After the CPU warms up and the fan is spinning normally, I can re-boot without getting the message. I tried to set a lower threshold for the CPU fan, but my MB BIOS won't let it go below a minimum value.
in bios advanced hardware monitor i can no longer change any settings. last week i could enable or disable the cpu fancheck or the system fan check. now i just get a screen that tells the temp and speed. says items on this screen cannot be changed in user mode.
thanks for your help,