Further to this, I have done additional troubleshooting
I've performed a recovery BIOS update
I've loaded defaults
Rebooted, adjusted upper and lower limits, and rebooted
BIOS cannot see fan speed or temps
I have found AIDA64 will monitor fan speed
I set a manual speed of 10%. All is good on cold boot, AIDA reports about 700RPM
After sleep, then resume, AIDA cannot see the fan speed, and it is noticeably louder...
Similar issues has been reported by other customers. Would you mind rolling back to BIOS version 0021? Download Center
Would you please report me the results?
Please check the following threads from similar issues
I reverted to BIOS 21. However the same fault exists.
If I manually set a fan speed, such as 13%, so that I can not hear it, upon resume from sleep it is much louder. AIDA64 cannot see the speed after resume from sleep, and it could before.
If I set automatic fan control, and change the limits, upon reboot the visual BIOS does not report the speed of the fan any longer and it is quite loud.
This also happens upon resume from sleep if I load defaults, and don't change any settings.
I've since re upgraded the BIOS to 0025.
The NUC was behaving strangely, not displaying anything on reboot, but cold boot was OK.
I then re applied the BIOS update from F7 method
It completed OK, however upon restart there is no display from the NUC
I've tried removing the recovery jumper, there is still no display, and the power light isnt blinking like it does when its updating the BIOS
My NUC is dead
Further to this I've tried it on a monitor and different cable in addition to the TV it was connected to. No luck
I got my replacement NUC after the other one was bricked by the BIOS update.
Alas the same fault exists:
1) fan goes crazy after resume from sleep
2) If I manually set fan speeds - BIOS no longer reports speed or temp and fan spins faster than it should.
Its on BIOS 0015 straight out of the box. I'm not sure I want to goto 0025 given my previous experience and the experience of others... I will wait for another version
Same behaviour exists on BIOS 0028