My laptop is an HP Pavilion DV7-4190US with Windows 8.1
I thought I should note first that a couple months back I bought a new LCD that worked beautifully, but after dropping my laptop a month ago, a couple of different things happen when I turn on my laptop.
Here's the link to the display pictures I took: Display Issues
The first thing that would happen is that it would run normally for about 2-3 minutes, then the screen would turn white with close thin vertical lines appearing on the entire screen. When I ran the system tests, the only thing it failed was the Video Memory Check (it gave no failure ID). When doing the testing, either very light vertical lines would appear or three columns of solid vertical lines, but at least the tests would continue to run and I'd have control of mouse.
When I connect an HDMI cable, the display issues appear on my TV.
Another time, the screen would turn black and would be covered with blue or green angled dumbbell shaped pixels. There were also times when it would look exactly like a TV with no reception (moving gray/black/white pixelated look) without the white noise. The screen remaining totally dark is the most recent.
Whenever I completely disassembled and reassembled my laptop, it would always run fine a couple minutes before reverting back to the various display issues listed above.
When I replaced the motherboard, since I was told that that might be the problem (the graphics chip or whatever else that's soldered on), it ran fine for a couple of minutes (saw the HP, Windows logo, and it was readying devices... I was excited as hell), but then the screen became distorted showing a mini version of my log in screen in the middle and corner, all jumbled up.
Any idea what the problem is? Is it the LCD, motherboard, program, or something else?
