I have the up4 th,so bios will be different,is that the latest bios on gigabytes site?
plug in a usb mem stick,download/extract the bios files onto it,reboot and press end key at gigabyte splash screen and flash through qflash,its much safer than in windows
also sometimes the bios settings will stick or wont save,so that could be why you can set dvid,only way to cure it is to reflash the bios
my board does it from time to time