Nice.. Ok, I was wondering if overclock would cause this issue.. I'm pretty new to mining!

Here's the details on my rig :

Asrock Z97 Extreme4
6x rx480 8gb nitro (nonplus) micron
Corsaire 1200 watt HX1200i
Risers, ram, ssd and that's about it

Let me know if that helps or if you need more information. Thank you!