Try changing the SATA in BIOS to IDE or AHCI.
Just tried this with the F4 BIOS version. I was able to log in and reach the desktop, however, after a minute or two it hangs then reboots. Also there's a slight increase in the loading of the log in screen. Do I even have to update the BIOS though? I thought maybe it could improve the performance a bit and on Gigabyte's website it states that the F4 BIOS version allows for Richland support, the descendant of the Trinity APUs.
Anyway I'll try the F3 next.UPDATE:
Tried it with the F3 BIOS version. Works fine and I didn't have to change the SATA settings.