I had the same problem. Turns out I had a bad chip in one of my memory sticks. If you have 2 (or more) ram sticks try taking one out and running it with just one and see if that that helps. You might want to try running memtest to be sure.
My computer was bradn new too...the memory was bad from the Mfg.
btw, Newegg replaced it and i can't praise them enough for their customer service.
Also the post before mine is good advice...i had build my system