You have a U processor. XTU only supports X and K processors.
You should uninstall XTU and reset the bios to defaults.
And, if you are undervolting, that is a bad thing:
Thanks for the response. I might don't know what I did that cause it to undervolting. (Or maybe someone else have change the configuration). How can make it to not undervolting?
Also, how to reset the BIOS to default?