I have googled, and tried to fix this issue since 3 days, about 5 hours per day, i have tried seemingly everything and nothing worked. Heres the story, please help me.
I own this PC since about 2 years never had problems. Then I reinstalled windows and made a fresh clean install. Its windows 7 64 bit btw
Since then i have been very weird cpu useage, often it stays at 100% sometimes it sways from 10%-98% all the time, usually though in the higher numbers above 50%, I do not have a virus, i do not have any process that actually uses this much of the cpu. Its just there without a reason. I have also cleaned all the dust inside my PC but that didnt change anything either. Yesterday I had some windows updates installed and for this ONE TIME, it all worked fine, but then today after starting it i had 100% all the time again. Which is really infuriating since i thought the windows updates fixed it. I even was able to play GUild Wars 2, when earlier my pc turned itself off every few minutes or half hour or so. (cause it got too hot i guess)
So what else could the cause of this problem be? Since CPU's dont have drivers i guess it cant be that right? Is there something basic i forgot to install or something.. i dont even know anymore, i really think i tried everything which is why im making a post myself and not googling until i find someone with the same problem, which also seemed impossible, cause the cause for their high usage was always easy to find..