Hi Colin,
I don't think that using the power button to shut off the OS is any good at any time; usually that is a (form of) hibernate mode, and the times that that worked well (recover from that) have gone since Vista.
But super that you sorted that out !
Now that's sorted I tried disabling HPET but then TPI shows "Not the Best" so for my computer I did need to execute the Command Prompt instruction :-
I think you make it way too difficult for yourself;
It would be correct what you're saying, but it is not correct to do it that way. I know, this is because of your history and the n/a thing, but you should just use the Try Change button when the n/a has disappeared anyway.
Notice that there's so much more in there and that you should let XXHighEnd arrange for it all in a consistent fashion. Just try it ...
Regards and thanks a lot for the feedback,
Peter