I'm sure I can Return it, since it's been about a week since I bought it. I'll try that, and if that does not work then I'll try placing all the Components on another motherboard and see if that does the trick. (cant do this right now as I dont have Access to another one at the moment).
I did test it With another PSU and then it booted prorerly, so I'll try this.
Thank you so much for you help! I really appreciate this!
Best regards Even