ok this is what it's happened! First of all i have memory context restore enabled, this disable memory training, if i have it disabled, pc doesn't start and i can't enter even in bios. with the four sticks inserted! No problem with two! With 5200 and xmp enabled windows doesn't start and ask for the recovery, i tried 4800 and it start but it's unstable, bsod, with xmp enabled, then i tried to change the fclk from auto to 2400 to be in sync with uclk and mclk (fclk is different according to zen timings) and my pc doesn't start at all, no bios, and led blinking in the motherboard about memory probem (i guess)i had to remove the battery and clear the cmos settings. Now the screen below is with xmp disabled, and just the dram frequency changed to 4800. If possible i don't want to deal with the removal of the battery again! Thanks!
Are you sure i have to try your settings and change the fclk from auto ? If wrong i have to remove the battery again!
don't pay attention to the xmp user profile, i disabled before rebooting from bios and left only the dram changed.