Hi Joe R.
I have since received an email to say it's working again! I left it in it's "I am not doing anything" mode and suggested the owner leaves it for as long as they could stand the blue screen with white writing. Seems they did something under their desk with the wiring???
I have asked for an explanation as I pointed out I have asked for assistance on the forum and would like to close the thread properly, but nothing yet.
Thanks for your suggestion and I am sure I could have booted from the disc as I was given that option after hitting F12 during the re-boot attempts, but it's academic now. I hope to post here with what they did :-)....wish all the problems were solved like this LOL