Hello. My computer is Z77X-UD3H/3770/Kingston HyperX 8GB 1600Mhz.
There is the exact same problem.
Then the bios issues started, only thing I saw in bios was black border with EUFI Dual Bios text and blue background.
I have not completely figured out, but it seems to be related to USB ports.
I have the freeze occurred when I connected the Logitech G25, even in USB2 ports.
Therefore,
I recommend disabling the extra usb devices and / or swap connected usb devices for different ports, use native ports (which is closer to the LAN), not VIA, use USB2, which is on the front panel. Something like that.
Something ill-conceived from the USB ports on this board, waiting for new firmware, current firmware is obviously raw.
I would say more, I have had problems with SATA2, when it was connected DVD-RW, a computer was loaded on a minute longer than usual, I turned off DVD-RW. Nobody is not writing about it and in the support service is not responding.
In general, have to experiment with connecting / disconnecting devices USB / SATA to solve such problems.
P.S. Attention! Bad English :-)