Have a HP Pavillion DV4 Laptop, screen started to go whacky about a year ago, but wiggling the cover would fix it, over time got worse to the point it completely stopped working. I took the unit apart, put it back together and WHAM, it was working fine... until I moved the screen and it started to go haywire again, lines, a semi blank white screen, etc. External monitor works fine. The screen is a complete b*tch to work on, and I suspect it's a damaged cable. There's a cable bundle (it's not a ribbon) that winds around the lid hinge - I think it's frayed. Nice laptop, can handle most games and loaded with features. Would like to fix it. Anyone have experience with an HP laptop?