Motherboard overheating, bios shuts down the desktop

[francesco palumbo]

I have a Asrock MATX 970 pro3, gigabyte gtx 1070 Xtreme, AMD FX6300 and a Cooler Master Hyper 103.
My desktop has three case fans (two in, one out), and it kept crashing whenever I was playing any game. Then I deactivated the 'heat' failsafe in the bios, and the computer stopped crashing.
My maximum temperatures (when playing Overwatch) are 50°c for both CPU and GPU and 37*c for my motherboard.
I use gameassistant 3 to record my temperatures, and the temperature indicator of my motherboard turns yellow whenever it reaches over 35°c.
What do I do? Do I simply turn off the failsafe or do I have to buy more fans?

 

[Paul NZ]

Open the case clean it out. If it's full of dust etc

 

[BradleyJames]

go into bios, monitoring and she whats happening there, i had a rog booard once that would overheat in about 10 sec. it was the northbridge i think that would sky rocket

 

[The Paladin]

you may have to redo your application of heatsink compound between cpu and heatsink