OK, was using the computer on Monday, when there was a power cut... turned it back on when the electric was restored, and - plink! - power cut again!
Now, when I turn it on, all will be fine, and then the screen goes funny! I've taken a photo of it (see post 1).
The lines are forever changing colours, and moving, but now, all of a sudden, it's gone back to normal!
Is the power cut the cause, do you think? And if so, is it the Graphics Card; monitor; or is it something else?
Hope someone can advise!