I had the same problem!:| And I'm not the only one! Some people get it later on, sometimes randomly, somteimes permanently. Still, with their no change in hardware it's obvious its the board's fault.
What ever you do DO NOT I repeat DO NOT send it back to Gigabyte/ the store you bought it from until you've tried everything else!
I sent mine back to the store, they sent it back to gigabyte (the store is in germany, dont know exactly where they sent it, apparently gigabyte wont allow the store to give the customer a new one directly, has to go through them).
Anyway, they've had my mobo for 20 days now. No word on progress, like I said I don't even know whereit is, no response on e-mails sent days ago!!
What are they doing? Keeping it hostage? Have it on a table staring on it? If it takes over two weeks to fix it, why not just send me a new one?
WORST CUSTOMER SERVICE EVER.:thumbsdown:
As far as I'm concerned, your (and mine) biggest problem is buying Gigabyte in the first place. Should have gone with asus.
So try with other memory and then update the bios. Or better yet buy a new motherboard. Non-Gigabyte. I have no idea if it will work with some other memory, but prepare to wait for an indefinite amount of time if you send the mobo back!!:|