While I was working and watching a video, my computer screen suddenly started to turn progreasively darker with weird bars appearing. The audio from the video still played but the screen wasn't responding and I had hard time seeing anything on the screen. So I turned it off and now it looks like this when I turn it on. Please help! I have so much work saved!
1. Turn the laptop off (not sleep or hibernate but off).
2. Connect an external monitor to the laptop.
3. Turn on the external monitor.
4. Turn on the laptop.
NOTE: You may have to press an "external monitor" button. Could be the f4 button or a button with two monitors on it, for the external monitor to work.
If you can see fine on the external monitor, then your attached display, or the ribbon cable that connects it, are your problem.
If you can't see on the external monitor at all, or the problem occurs on the external monitor as well, then it is probably the graphics card/GPU that is the problem, which may require the motherboard be replaced.