I have tried with the first, but that doesn't do it. The second command is new to me, and I will certainly try that tonight.
I've found a way to get mysql started - and crazily I'm not sure how that is. I think it is when I click on the Restart icon. After that, I can start it going on the Command Prpmpt.
But even when it's going, the control panel says it isn't. Many thanks for the suggestions.
This new version of xampp - '15', I think - will only will be installed in the programme files. So the old idea of it being best on the root of C seems to no longer apply. Cheers