Ok after all the advice of the epu was engaged . It seems it was.
Not in bios, I had all the settings disabled. But when I was looking for voltage monitors in the AII suite under tools there was the EPU panel and it was set to max power saving.
( OK Sorry I didn't know it was there)
Anyway changing the setting to high performance did the trick.
I went from 1400MHz to 4000MHz.
I ran the wei rating and it went from 6.0 to 6.5
So went into bios and enabled all cores. Re-run the test and wei went to 7.6
so thought I would try a little O/C so I hit the fast button
Computer duly restarted this time at 4.45GHz.
I ran the wei rating and it went to 7.8
However I was running core temp and it was telling me I was hitting 80 deg on full load. So I have decided to hold back pressing the extreme OC until I get a better cooling kit.
So pleased it was not a hardware problem
But I do get warnings , like SB voltage 0V, Dram voltage 0V. temporarily , so I think they are hic cups.
Thank you for all your thoughts and help.