I've been doing some online searching and I find very little about my problem.
This is an older laptop pavilion zd7000 running Windows XP. The red lines appear on an external VGA monitor as well so this rules out the actual LCD screen. I have replaced the CMOS battery as one website suggested. Lines appear on splash screen and in bios. It comes and goes while logged into windows. Sometimes a window will be open and the red lines are on the desktop but not on the open window.
Anyone with experience with this? I don't have much time to figure this out and either provide a solution or call it a loss. Could it be a driver issue? Or perhaps something wrong with the onboard graphics card? See attached for image.