I have random grid lines across the computer screen.

Hey there,

It actually turns out that it was the monitor itself. I personally don't think i touched it however it might have just popped up by itself. I personally had a 27" asus ve278h 2ms 1920x1080 spk hdmi d-sub led blacklight lcd monitor. The way i resolved my issue was by messing around with the buttons underneath the monitor. For example depending on what monitor you have there should be you know your settings and other buttons that do other assorted things on the monitor. My buttons were underneath the monitor to the right hand side, yours may vary. Anyway my monitor has an option S/A and I fixed the issue by pressing that a few times in a row. I noticed when i pressed it that the grid alignment actually changes. So try looking through your monitor settings and mixing around a little and let me know how you go! Another way i knew it was my monitor was by turning the monitor off and on. Id turn it off then back on and notice that the grid lines temporarily disappeared for a few seconds.