I'm trying to get working my new memories : G.Skill F3-12800CL9D-8GBXL (4GBx2 kit) on my Gigabyte GA-MA790FXT-UD5P. When I insert them I get Win7 freezing when booting (when the flag logo is showed). I tried 9-9-9-24 setting with 1600 and 1300. These are 1,5V memories....can't find a setting in BIOS to lower voltage from stock 1,6V to 1,5V....any suggestion? Today I'm going to do a Clear CMOS and set them in manual mode