For my second rig I have a MSI P67A-G43 with an i3 2100. And when I booted it up it fries (literally--the HDD smokes) my HDDs. It posts and everything but I'm not sure what the problem is? Its the second drive I've put in. The PSU is a corsair 520hx that was working perfectly fine and the memory is a pair of supertalent 4GB sticks at 1.5v.