We need a lot more information than that?
You got? You got a new motherboard and now this problem occurs with same components before the switch? You build a pc and are using a z87? I don't understand what or anything?
We need to know the whole story, and all the componenets. A non post could be a huge variation of things. What version of a motherboard only narrows down the possibilities to like a million instead of 5 million.