6-6-6-18 (or 21, if that's the next option) would be my first try, and if it works, we can get an idea of the issue being resolved. The voltage ought to work at 2.0 for that RAM at those timings.
I thought lower the number that is why I bought it over some other RAM in the first place but I have not tried anything yet. I have the code from the blue screen but it is a massive load of numbers and letters? At the top it stated SYSTEM_SERVICE_EXEPTION
I will try the new timings tonight
No need to say sorry you have given me plently of help so far which I appreciate