Well the software IDU monitors the Power, Processors, Mainboard,harddrive, but it does not show the values for the hard drives.
As you said earlier that in the Alert History, there is a series of alerts of type "Warning" without any additional information. I am thinking that this could be down to the hard drive.
Possibly, you can use the Manufacturer Hard drive tool to test the drive.
Regarding for the board, the only test is to make sure that you have the latest bios version 1754.
Do a CMOS clear on the board.
Update to the latest bios.
Clear the Event log in the bios. >> Advanced >> Event log Configuration >> Clear Event Log Enabled
Save and Exit.
As you said also that for the intel components, everything seems to be monitored correctly.
Note that if you have a series of alerts of type "Failures", then you will need to investigate further.
Try to see if you set the threshold range manually.
All the best,