I have a Phanteks Eclipse P400S Tempered Glass and i find it impossible to plug in the hd audio into my motherboard. It only goes half way into the header. If i push too much i'm afraid i will damage the board. There isn't any dust or any stuff stuck...

As the title says if i set my corsair ram(CMK16GX4M2B3200C16W) to 3200 my pc will double post everytime i turn it on or i would restart it. This is my first PC and I've learned everything by myself from the web so there might by something i'm missing...