kajaia

for clear instructions you should google it. 
 
Also it mighut be hardware issue. if DDU did not help only thing you can try is to update Bsios, Chipset and before that completely reinstall windows again.
 
otherwise the rx 580 has a problem

It will be downclocked not because of the imc but because of the board. 
I completely misread the question my bad. 
It will be downclocked because the original stick is at 2400. Lol I feel stupid. 

Intel allows oc only k processors 

Nor your cpu or board can 

https://www.komplett.no/product/1125191#
4-cores 4-threads should be good enough for CS:GO, infact my GTX 970 barely go above 30-35% usage... CS:GO is 99% of the time CPU bound!

I will try to do

I used This video for instructions.

Link is: https://www.guru3d.com/files-details/display-driver-uninstaller-download.html

I would save and try to get this at this PSU at the very least, if you can find a good unit used/refurbished in your area that is of sufficient wattage and in good condition, you may want to get that instead, although know there are definitely some risks involved with that since you may not know of potential modifications made to it or how it was used in the past (ex. used at higher wattage than rated for a long time and limited airflow):        https://www.newegg.com/evga-100-w1-500-kr-500w/p/N82E16817438016?Description=EVGA W1&cm_re=EVGA_W1-_-17-438-016-_-Product
 
* At minimum, stay away from power supplies that are not 80+ rated and/or aren't of reasonably more wattage than you would plan to use in your system. If it is estimated that a computer would take 500 watts, I would get a 550w or 650w PSU that is 80+ certified to ensure stable power at all times without potential issues (ex. PSU failure, computer system component damage, and even fires on extremely bad units).

Yeah, I wouldn't trust your system on that unit. Depending how the rails are set up, you probably would only be drawing power from the +12V1 rail, which can only supply 12V*14A = 168W, and that's a best case scenario where the PSU keeps up with what it says. I wouldn't trust that unit with more than half the rated current.

It's garbage.

Anything from a major brand would at least be passable-- corsair, seasonic, antec, etc.