darkthings :
So I need to know weather I do my test boot (out of the case) with the factory fan or with my h100, coz if I do with the factory fan I'm gonna have to remove it, and clean the back of my cpu. So maybe I could do my test boot with the H100? Easy question, thanks to everyone
A test boot out of the case is a good idea. I always try to do that.
If you think that you could install the H100 in the case without removing it from the cpu/motherboard, then I certainly would do that. It will test out the proper functioning of the H100. That would also give you an opportunity to do some testing of overclocking in a test bed environment. Even if you will need to remove the H100, I still might use it for testing.
Be prepared to remove the paste from the cpu and h100 and to reapply new paste. I use common rubbing alcohol and a lint free paper coffee filter. No need to remove the cpu from the socket. Most any paste will do, the efficacy of different formulations is relatively similar. AS5 is a popular one.