Thanks for the reply's. Since these have been trying different things.
What I did do on advice from Corsair is test 1 ram at a time at xmp all four good. Then twos all good for all pairs. Then only when I had two pairs in (4) it would work initially but later when the computer was switched off at the wall or when left for a day with power in the wall left on but computer off would it start a mem ok sequence. Then succeed with higher voltages than the xmp should be and also upping other voltages into red entries.
So the situation now is :
The issue with the xmp happens whether or not I overclock the CPU which is my intention, especially with this motherboard and CPU.
1.0 I have a profile set which runs at normal XMP2 including a std dram voltage of 1.35. I Have also put in place in the profile an overclock of the CPU to 5.0 Ghz. Settings ( XMP11 / Asus multicore enhancement off / Sync all cores / set then to 50 /Min and max CPU cache 45 / COPU Core V 1.3 / DRAM V 1.35 ( This correct XMP setting) / CPU VCC10V 1.15 / CPU System Agent V 1.1)
2.0 Once the computer is running on this profile it performs perfectly under stress tests etc. And never crashes. All Good.
3.0 If I leave the computer plugged into the wall and the computer off ( so some power still running through the board) it will restart most of the time using the above profile. Then Sometimes, every now and again it will go on and off briefly one or two times whilst the mem ok light flashes. It then will boot up with a message telling me to go into the bios. So I have to enter the bios with F1. When in there it has changed the Dram voltages from 1.35 to 1.4 and raised the CPU VCC10V up to a figure in red and likewise the CPU System agent voltage.
4.0 Now the strange thing is when in the bios after the mem ok scenario I reset the profile back to my normal profile as set out in 1.0 above and save and exit it once again reboots fine and will keep doing so time and time again. Also the computer is perfectly stable at this profile once again.
5.0 It also seems if I kill the power in the wall so no power in the board it makes this action of going into the “mem ok” scenario on start more likely.
It is very strange indeed how the computer will run the same exact profile fine and with full stability. But then once in a while, and this more likely when left standing for day or so or when there is no power in the mother board, appears not to be able to run that profile but then once started after the mem ok (with the increased voltages) and then the same original profile saved and exited again will once again run fine and reboot.
Not sure what is going on . But something is changing. It is almost as if the board is intermittently forgetting the last profile and attempting to get an alternative set of voltages to work during the mem ok. But then perfectly happy when using the original profile in a save and exit.
What changes in a boot when the computer has been left for a day or so or when power is totally taken from the motherboard?
Thanks for your help !
