I just saw a similar problem on a DELL the other day, and it was definitely a hardware issue. DELL had to send someone out to fix the unit.

If it is under warranty, take it back.... if not, you may have limited options....

Plug a regular monitor into the laptop, and if the line is on the monitor too, it more than likely is your video card.... if not, problem could be in the screen, the wiring??!?

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Say what?