Yeah i know, if i ensble Xmp in BIOS it clock the ram a 3200mhz, but as mentioned earlier it seems BIOS can’t save that settings. The pc reboot 3 times before loading up windows, and all the programs i use to see the ram (iCue, CPU-z eg. says 1066mhz on the ram.You cannot overclock those ram sticks your mobo only supports up to 3200 so if your overclocking it may be stopping the other one from functioning even though it is plugged into the motherboard it will show you have it but it wont allow you to use it if it's trying to push more power to something that isnt supported. So disable all overclocking and see if that helps
What ever i do to change any settings on the ram, evne manually set the volt has the same effect. 3 times reboot and Bios go default settings when Windows load up.