You have 2 basic issues to start with.
- It's an AMD FX. But I'll leave that there.
- It's amd Fx, which does not have thermal strips on-core the way Intels do. So cannot actually 'read' temps even somewhat accurately as there's nothing to read. Instead, the FX use a thermal margin, comprised of a seriously complex algorithm fed by data from a thousand different sources such as load, vcore, vid, vccio, VRM voltages, package and socket temps etc. The cpu itself has a written max working temp and the thermal margin is the distance from the algorithm's temp to the max temp. So a TM in the 40's is great, 30's is great, 20's is still good, 10's and it's something to think about cooling solutions. If you hit 0, you are in trouble, and any negative number means you have a serious problem somewhere.
There's only 2 programs written for the FX, and use thermal margins. AMD Overdrive and Coretemp (have to specify the TM). Fx do not read as like an intel, so even seeing 72°C in bios is suspect.
Clean the pc, especially the heatsink, you should be able to see daylight all the way through any section. Repaste. No idea what paste is under that heatsink, some are better than others and some aren't much better than toothpaste. Most decent pastes will last 5-8 years without a worry.
Use Overdrive or Coretemp to check TM. The actual number isn't important, what is important is what the number is, what range, how close to 0. A TM of 40 is exactly the same as a TM of 30, tons of room thermally, a TM under 10 is quite different.
It's only after having a solid place to start from, with everything hardware working as it should, that additional info can be scrutinized. Jumping the gun, leaping to conclusions etc is just grabbing stuff in the dark. Better to start out in a room that's lit.