Vista - PRobb

People see horizontal lines on their LCD Monitor; This can easily be fixed by doing the following: Restart your computer>Right after you restart "Turn off your monitor (neon button on the bottom right side of your monitor)Unplug your monitor. When your monitor starts up and begins to download-Put the plug back in your monitor, and push the neon button on the front of your monitor. The horizontal lines should be gone. Note: There is not a length of time to plug in your monitor and turn the screen back on, but, be sure to plug your monitor back in first, then, turn on the screen. These horizontal lines appear on my monitor quite often.

That actually sounds like the monitor, or something else is failing.

On my older Dell, I get occasional horizontal blue lines which 'temporarily disappear' after switching through the inputs. In my case, it's definitely the fault of the monitor.