But this is usually on a list of causes such as GPU, cables or drivers. Nice pictures! But not enough clues.
Tip: Always include the exact model number. Who knows it could have the well known 8400, 8600 or other GPU noted to fail (http://gizmodo.com/5035980/inquirer-pretty-much-every-nvidia-geforce-8800-9600-and-9800-graphics-card-is-defective )
I have One-pixel lines on my toshiba satellite laptop. They cover all the screen except the top 1 inch. Please see the images below and I would appreciate any possible help/explainatio of what is happening.