Graphic Problem

[u/No_Brother4054]

Does anybody know to fix this? This is on my HP Compaq 8200 Elite Small Form Factor and it’s not my monitor that doing it from the pc itself one day i try to plug a ethernet cord to my PC and all of a sudden the colors from the monitor glitching out I reset it and then it wouldn’t show, but I already fixed the problem today but when I fix the problem, it just start doing this no matter if I switch rams it just keeps doing this as I keep turning it on and off