Folks
I started a thread here a few months ago regarding my XPS M1330 screen displaying vertical lines and was advised that it needed a new motherboard.
Things have developed and for those interested, Dell (and others I understand) have been subject to a class action in the USA which has led them to extend the warranty for not just the M1330 but several others afflicted by the nVidia GPU which is the source of the problems.
Just today they have replaced free of charge with the visit of an engineer, the motherboard for me and all is now fine again - a bit better than spending the £360+ they were asking a few short months ago.
Here is a link:
Dell Offer