The most likely cause is that your cooler isn't seated properly. I'd take it off, clean it, re-TIM it, and reseat it, making sure that it gets tightened down all the way.
You were right. The problem was that the cooler wasn't seated properly.
I had to clean, to buy a thermal paste and assembly the cooler again.
Now the tempertures are between 36 to 40 Cent Deg and I culd OC the CPU running 4.4 MHz
Thanks for yor quick answer, for help me and share your knowledgement.