Asus tech support said that my problem was an overclocking issue and the only thing they could do was to send me to the ROG overclocking forum.
So here goes.
I have an i7 Sandybridge 2600k @3.6ghz , P8B75-V Motherboard and 32GB 2133 Corsair Vengeance Pro.
I have set up the BIOS correctly with the right settings. When I boot windows 10 the frequency is still at 1333 and the clock timings are all wrong too.
Asus said that my motherboard doesnt support windows 10 (Which I thought was odd as that is precisely what im using, other specialists I have consulted also thought this).
So Asus have sent me here as they don't deal with overclocking and they said the only way to get the correct frequencies was to come here.
Please help