Desktop PC overheating and shutting off

[fyrflygrl]

My desktop PC is overheating and shutting off by itself. I can even smell it when it overheats. I ran speedfan 4.52 and it shows AUXTIN1 and AUXTIN3 with fires next to them. Does that mean that my power supply is overheating and needs to be replaced?

 

[Jasjar]

The AUX temperatures are sensors that are not plugged in and could be a combination of all the system temps. Since most burning smells come from the PSU, replacing the PSU should fix the problem. Make sure you get a decent PSU though.