Windows 10: Moving squiggly lines just started appearing on my computer screen.

Just logged into my computer today and these weird moving squiggly lines began to appear and disappear on my computer does anyone know what it could be?

:)

 

Red squiggly lines in typing

I too have the red squiggly lines appearing when I'm typing in Facebook posts. This just started happening. I don't want to turn off spell check because I still want to have that feature when I type yet every single word I type has the red-squiggly lines
underneath it. It makes me wonder if my keyboard is set to a different language? Any other ideas?

I was using Facebook in Google Chrome browser. I tested in Explorer and Edge and it didn't happen. I also tested in a Word document and it didn't happen either.

Another weird thing that just started happening is my mouse pad gets disabled. I had to search how to enable it again. Not sure why that is automatically being disabled.

 

Lines appear above text when scrolling, or when anything is moved on screen.

If the lines on the monitor appear no matter what computer it is connected to, the problem is in the monitor.

 

Red squiggly lines in typing

I hate these and know how to turn them off in Word.

However I have just upgraded to Windows 10. Word is set as my editor. However when typing on a website, the red squiggly lines have started appearing automatically, even though I have killed them in Word.

How can I stop Windows 10 over-riding this setting?