So, what's the question? If it's still under warranty, I would obviously recommend getting a replacement from the manufacturer.
Go to this website: http://us.msi.com/index.php?func=service
If your motherboard is still under warranty, you should try to replace it. If not, I'd try to reinstall the motherboard drivers. If that doesn't work, I'd try to borrow somebody else's motherboard if you can, but obviously that's not a small thing to borrow... I would also check your power supply if the motherboard fix doesn't work. I've had a power supply go bad and cause major problems with all kinds of random parts. For example, I thought my video card was broken because it kept downclocking itself and crashing. It turned out that it was just because it wasn't getting enough power.