laptop screen Vertical coloured lines
dell 9300-not flimsy/thin screen/lid.
have 10 steady and fixed veticle lines which appeared one day, being:
5xgreen/2xpurple/3xyellow, do not show on screen shot or external monitor.
up to now not been too much of a problem, however,
one green recently started to flash as single green/double yellow for short time
settling as either-mostly single green.
nothing changed/modified so not likely mismatch of parts,
could somthing be wearing out/breaking down.
no change with squeezing tapping or moving lid/screen.
noticed a few laptops for sale recently
[different makes/models] with similar problem.
come on you techies whats the answer?