Thats a video card problem, most likely going out. From working as a DELL notebook repair technician, I believe verticle lines is bad! Like the video card is dying, horizontal lines is something else, hell its been a while, but if Im right than verticle lines is bad, if Im wrong my bad, its 6am I can't think straight, lol
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Pentium D 830 3.0 Oc'd 3.6ghz | 961mhz FSB | 4x512MB DDR2 533mhz 4200 dual channel| MSI 7800GTX OC'd 522/1440 | Asus P5LD2 | 36GB Raptor | 160GB WD | 250GB WD | Big Typhoon HSF | XG Dragon | 3dmark05-8246 3dmark06-5037
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