yes, all hardware was purchased at the same time, however, notably, one stick of my dual channell OCZ (which I've had good luck with in the past) of ram was DOA, and my motherboard was defective however, it did not show any symptoms until I upgraded to vista. I've had trouble with the power in my house, with surges and the like, and, I have my system hooked up to an APC surge protector/ battery backup. (which means its no better than just plugging it strait into the wall) I have been meaning to invest in a monster surge protector but just haven't done it yet.