Motherboard...

Yes, I believe it is your MoBo which went bad. I had this happen just recently to my brand new MoBo which was an ASUS M3A79-T Deluxe, so when I called up ASUS about it, they told me to send it back to NewEgg where I purchased it and gave me a Case #. I did receive a new MoBo and I haven't had many problems with it.