What are you using for a cooler. If it is the stock one that could be the problem. Plus if you are using the stock cooler make sure it is seated right. One other thing don't us a lot of paste too, more isn't better. The temp is 70c that is 158f. You could try a better cooler 3rd party.
In the Bios:
PC Health Status
CPU Smart FAN Control
Allows you to determine whether to enable the CPU fan speed control function and adjust the fan speed.
Normal Allows the CPU fan to run at different speeds according to the CPU temperature. You can
adjust the fan speed with EasyTune based on your system requirements. (Default)
Silent Allows the CPU fan to run at slow speeds.
Manual Allows you to control the CPU fan speed under the Slope PWM item.
Disabled Allows the CPU fan to run at full speeds.