Well looks like I've got lucky.
I'm still not sure why, after repeated attempts to get v23 thro, checked windows firewall etc etc etc,
Everytime I tried to turn windows firewall off it just turned itself back on, so I gave up and requested a new download code to try that, which I used still not luck, still the black screen, hit the return key as suggested and it just keep going back to try and extract files then back came the black screen box.
By this point I was pretty much giving up, as I moved the mouse down over the black box in the middle of the screen i happened to left click the mouse which highlighted in blue a bunch of text relating to the software agreement.
So i thought hang on what if its there and i just cant see it, lowered the mouse to the bottom right hand corner thinking maybe there might be an ok button hidden. Couple of clicks on the mouse for luck and up come the 3 pictures window (which i know means its downloading) seconds later up comes V23.
AT LAST. i dont know how, why etc but its there and its running all files intact etc etc.
Thanks to everyone for there input, assistance, suggestions and advice.
Best regards
Rob