hello, i can't seem to find a gigabit ethernet option in the bios
also, the bios is not full screen and says that it cant change the resolution, i dont know why. 
BIOS version is F5 and my specs are: intel i5 4670K, 8Gb Kingston RAM at 2400MHz and GTX 560 Ti. 
if i enable gigabit in windows it wont see the network cable and say its unplugged.  all drivers and hardware are up to date and capable of gigabit ethernet. 
Can anyone help?