Not to blame the MB, honestly I,m not, but I had to rma 3 of those things for misc. issues. Got one 6 months later on a combo deal and used the same hardware and it worked flawlessly. Go into safe mode and see if there is any harware conflicts or two of one device in the device manager. If not swap the video card. I also found that video cards and their drivers can have a lot to do with what you mentioned.