You could try to update your bios to
the latest version. Check first what version it is : enter the bios (tap del or F1 or search for a message telling your which key to press during the startup), and search for a version number (vx.x) in some corner of the screen.
Is your version prior to 1.11 ?
Code:
Symptom corrected by version 1.11 - IWET57WW
* (New) Improved CPU thermal control.