Well, I finally got my pc working again, so I'm back! For those who care, this is what I've done: I first sent my processor back to get it checked. They said it was working fine, so I had to test all my hardware. I started with putting another processor in. It worked fine, but that processor was weaker so I wanted to know what also could be the problem. Then I replaced my motherboard by almost the same one from MSI. It worked all fine. So I guess my motherboard just wasn't compatable with my processor.