Hi Tony,
I created a new topic for you but for future reference just go to the relevant forum section (e.g. A5 club) and once you are in it there is a little black box in the right hand corner that says "start new topic" so just click on that :)
With regards to your white screen, there are plenty of reports of this happening to people once, sometimes staying that way for a few hours but after that it corrects itself and for most people it never happens again. Perhaps it's a software bug.
I wouldn't worry unless it keeps happening.