16:9 Resolution problem.

[KiyoshiYamaru]

Correct, I have highlited the slider, clicked it and hit the arrow keys left and right. It makes the Click noise like it's changing, but the slider doesn't move, and it stays on 4:3 still.

update!!!!

without using the mouse at all, I went back in and into the menu. Selected the ratio slider again, hit enter and used the arrow keys and it finally worked.. tis fixed and the advice is very much appreciated.