Windows 10: no video but horizontal and vertical lines

I have a d620 lattitude that i purchased used. It has been working well until a few weeks ago when it developed a vertical line near center, still with video. Shortly the vertical line disappeared, but had no video, just a light blue screen. I connected to my lcd tv and it showed a very bad video screen and some lines, any solution?

:)

 

Horizontal and Vertical typing line

I don't know how to explain this, but very, very rarely the normal vertical line typing thing just changes into a horizontal line.

To explain this, just type something in your browser. Notice that before every letter typed there is a vertical line representing where the letter will be.

What very rarely happens is it changes into a horizontal line instead. It makes it so if you click on a letter, instead of a vertical line going either to the left or right of the letter, it instead selects the letter and makes it so if you type something,
you change the letter instead of typing one.

This is NOT dragging your cursor on text selecting it, it is a completely different way of typing that I don't know how to reset.

 

Vertical and Horizontal Lines

The problem I had with vertical and horizontal lines has nothing to do with Windows. I have an ASUS monitor. There are small buttons along the bottom of the screen case. It is easy to inadvertently touch the buttons. One of them turns on an "alignment
grid." Simply push the button to turn it off.

 

Vertical and Horizontal Lines

I was away this morning and my Windows 10 computer performed a major upgrade. The result is that I now have two gray horizontal lines and two vertical gray lines on my screen. They form nine rectangles that overlay every program. I checked screen settings,
etc and nothing works. My system, computer and monitor, is from ASUS and worked fine until the "update."