My hp laptop is one and a half years old..and a few weeks back, I started experiencing horizontal white lines on top of my laptop screen...Along with these lines, there appears to be a slight flickering/jumping of the display by few pixels...After going through various support forums, I came to know that if it was a graphic video card problem, these lines would also appear on an external display device. Hence, I connected my laptop to an external display and it works just fine(no lines at all). So, now I am at the conclusion that the display panel is damaged and needs to be replaced. Do you guys know of any other issue that might be causing this?If yes, please do reply..
And also let me know of the cost of replacing the display panel..