Check this article:
Here is the latest firmware:
If you are not using an Intel chassis, select "Other Chassis" and select correct fan configuration.
Thanks for the inputs. Probably on my board, the case / fan configuration is incorrectly configured, so all fans run at 100%.
I tried to update the firmware to get to the chassis configuration menu. I downloaded the firmware to an USB stick (FAT32) and booted to the EFI shell.
However the EFI shell is not behaving as described in the documentation. What I get is the following when trying to read the USB stick.
When I do map -r, I get a list of block devices, not fs0, fs1 etc. When I try to change to the file system on the USB stick, I get invalid mapping name.
Surely a stupid beginner's error. Can anyone help me?
Seems your USB key is not properly recognized by the system. After you plug it, wait for a while (like 10 seconds) to let it initialize. You should hear a short beep indicating USB device connected. Then run "map -r" to refresh the mapping table.
If it doesn't work, try a different USB key. And yes it needs to be formatted using FAT or FAT32 file system.
using another USB stick did the trick. THANK YOU!
All quiet on the western front now.