Windows 10: Grey dotted horizontal line across screen with barely noticeable vertical one

I got my new laptop an ASUS Zenbook Pro 17 about a month ago. I love it, but it already has had some issues. I’ve gotten a few blue screen errors but last night in the middle of editing photos these lines appeared. Nothing was touching the screen or anything and the computer has been in a case always when not in use. My fiancé plugged his monitor in and the line did not transfer to the second display. I’ve tried everything from updating display drivers to restarting the PC. I’m just trying to see if anyone has any advice that I may have missed before having to go through the trouble of contact

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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.

 

Screen showing grey lines

Thank you for answering. The lines are fine grey lines - some vertical and mostly horizontal covering the entire screen. They last for several seconds but have been lasting longer each time they appear.

It is on a laptop, I have gone to device manager and found the monitor listed and updated, but it said I had the most current version of the driver. What else should I do, that has not helped?

Thanks for any help.

 

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."