R7 1700 core load to 100% randomly.

[Alexander_7]

Sistem specs.
R7 1700, oc @3.7ghz, 1.300v
Msi x370 gaming plus.
16 gb ram, corsair lpx.
Seasonic s12II 620w.
Zotac 1060 amp.
Windows 10 pro.

Since 1 or 2 days (honestly today i noticed it) i was seeing random framedrops in games, so i decided to check what it was, my monitoring software (hwinfo64 and hwmonitor) showed core load at all 16 threads at 100%.

Later i let the pc be on its own, only my basic background services running and after a while, the core load went to 100%, its very random, cant find which process makes it happen. I thought it was my overclock, but after running 50 pases of Intel burn test and 3 hours of prime95 the system showed no inestability.

I has not crashed neither, it just drops frames or stutters videos, thought it might be drive related, but health on both drives, ssd and hdd is just fine and no bad sectors were found...

Any idea how to catch this up?
Some people adviced me to go for a clean windows install as this is probably software related. But i want to figure it out if possible, before doing that.

 

[elbert]

In task manager select CPU to see which programs taking up your CPU. If you see none then run a boot time virus scan. Then use malewarebytes to scan for maleware.