Hey,
I have more than 3 years old Dell U2711 monitor and for some months now my monitor has started showing moving green pixels on half of the monitor. The problem is not in the cables, because i can see the pixels even when i'm navigating the monitors menu without any video cables attached.
Sometimes when i turn the monitor, or push the frames gently, the problem disappear for few days, and then it comes back. So i'm quite sure that it's contact failure. The monitor is doesn't seem to overheat and i keep it at around 26% brightness and i've tried switching the power cable. Also my DisplayPort cable is brand new that i'm using.
Is there any chance to fix it by opening the monitor? And for some reason dell system detect or manually typing tag wont recognize my monitor..
Thanks.