This is my computer setup:
Asrock HM61/U3S3
G.Skill 8gb ram
HD 6870
i5 3570k
Seasonic M12II-520 watts
I had a i5 2400 before the i5 3570k. I just replaced the i5 2400 with the 3570k and after that, none of my peripherals would work. My display doesn't work, my mouse, keyboard, audio, ethernet...