I have one of the new xbox 360 slims. I am experiencing vertical multicolored lines in both hd and standard views. I've read in some places that the graphics card in xbox may need to be replaced. I have tried several hdmi cables with the same result. I have tried going from the lowest hd setting to highest. As I mentioned I also get this in standard view. This has all started happening in the past 2 months. Can anyone offer insight?

I would check it on another TV, just to make sure its the XBOX for sure. If it still happens on another TV, then call 18004myxbox and they should fix it for free, you get a 1 year warranty after all might as well use it and now. It could just be bad hardware. I would just call MS and have them fix it for free. You need to get a box to ship them it, then they give you a free prepaid shipping label.