Make sure your cooler is seated onto the chip properly, my pc shut down when my Andy Samurai Master wasnt properly seated, crappy push pins ftw.
I recomend (if you can) finding a watercooling shop and buying a skt775 backplate for a waterblock, then using long bolts and washers through the supplied "legs" for the push pins, that is what i did, and now my mobo is no longer bent and my temps are stable @ 40/38/39/36 on a B3 stepping q6600.
I can post pics of the backplate mod if required.