Why does my computer have red lines going down the screen?

Nope, it's your monitor bud. What it sounds like you have are stuck pixels. Believe it or not they are somewhat common. Here are some things you can do to fix your stuck pixels(and by the way, if they are red, they should be fixable, if they are black... they are considered "dead pixels", and unfixable): http://www.youtube.com/watch?v=eeAgOdo46wg - Helps alot. I suggest first method of the screen color switcher. For a long line, i would suggest pressure method. However you must push on both edges of the stuck pixels if this line was your set of stuck pixels _______________________________________… apply gentle pressure at both ends. (and YES a stuck pixel can be an entire line down a screen) Hope i helped.! :D EDIT: And seeing what that other person put, NO. It is NOT about to die. It can be saved most likely if it is only a set of stuck pixels.

Yeah Monitor is going out. Check this one I just got my kid for his PC. http://www.amazon.com/ViewSonic-VA2431WM-24-Inch-Widescreen-Speakers/dp/B003FP7OYM/ref=sr_1_1?s=pc&ie=UTF8&qid=1322249271&sr=1-1 Hope it helps