Gigabyte motherboards are known to be picky with ram settings. You don't need XMP to get it to run at that speed. If it's suppose to run at 2400 Mhz with 9 9 9 9 11 settings, then manually set it. The memory timings have to be exactly as the ram maker says it, or the Gigabyte board will complain and resort to default.Second, when I enable X.M.P. 2400 (I have 2x4 GB Kingstone HyperX Beast 2400 MHz CL11 RAM), OS won't boot. It only works with X.M.P. 1600 and 2133. I saw in other test that you also have (or had, at least) the same RAM.
I believe you need to use the + - keys where the keypad is to change values.And, third, the worst one, is that I can not change any values in BIOS (like 2/3). For example, I can not change latency for RAM. I have set it to "Manual" or "Advance manual" instead of "Auto", and those values turn blue (from gray) so I should be able to change them now, but when I press "Enter" nothing hapens (no options apear, no drop-down menu, nothing). And that is the issue with like 2/3 of BIOS setttings/values.
It's your first time dealing with motherboard bios? A lot of these motherboard BIOS's have terrible conveyance, but the terminology is universal.I have tried F4 and F5. They are the same. I have also adressed this issues to Gigabyte, but still no reply. I haven't been able to find anyone that owns the same motherboard to ask them to verify this.
I would really appreciate your help.