I am having this exact same issue. A lot of reviews on NewEgg are also stating the same, along with the Boot Loop issue, random lock-ups on boot, etc.
Some of the reviews suggested a BIOS update, so I'm gonna try that next. If that fails, I'm taking this board in to be tested (only bought it on Sunday, TigerDirect will check it in-store for me).
I'll let you know how it goes and if the BIOS update works.
Feels a little better after the update. I was able to put my second RAM chip back in (it wouldn't play nice with 2 x 4GB). Goes from power on to loading Windows in seconds, USB works from boot again. Hopefully this lasts!
Glad your's is working. Mine didn't get better. I returned it to Newegg and replaced it with a MSI Z77-G43. I've had it for six days and not a single problem.