Hello, I have an Asrock h87m for over two years without any problems. So I bought a water cooler to overclock my i5 4670K. I begin testing the water cooler temps and everything was working perfect. I install the ATuning and made some testing, everything working as expected. So I tried to overclock via BIOS, them in order to do that, I updated my BIOS to the Non EZ version and overclocked my processor. I was not able to make my system stable, with any voltage (1.000 to 1.3000). The temps never cross 60º Celsius and the system continues unstable. So I tried every BIOS version available and the system continues unstable. So I try to go back to the stock configuration with BIOS reset, BIOS update, downgrade and the system continues unstable. Every time that the processor go to full usage the system reboots. I have tested the system with undervolting, underclocking, removing extra hardware to test PSU and the problems persists. Any ideas of what may causing this problem?