Turn off CPU thermal monitoring in BIOS.
I dont have this option
Need to give more information on your computer setup : INFORMATION REQUIRED WHEN POSTING A QUESTION
Sounds like your CPU Cooler/Heatsink is not properly installed or it is dirty or the fan is not working correctly. Make sure when it is installed the CPU Cooler doesn't wiggle and it firm and tight to the CPU surface.
What motherboard Make & Model do you have and CPU Cooler installed.?
Could be BIOS is misconfigured making your APU run hotter than normal.