For my notes, click my username and via private message send me the monitor service tag number.

* Was this monitor purchased directly from Dell as new?
* If not from Dell, from whom did you purchase this Dell monitor?
* When was the purchase made?
* How long were using the monitor before you noticed this issue?
* What is the non-private 20 digit S/N?
* What is the non-private A0x revision?

* What operating system?
* What specific PC model?
- If a Desktop PC, what video card? What video out ports are on the video card?
- If a Laptop PC, what video out ports are on the Laptop?
* Show in detail how the monitor is connected to the PC using all ports and cabling. Example =
PC GTX 1080 DP out port --> U3417W DP to mDP cable --> U3417W mDP in port
PC USB port --> U3417W USB upstream cable --> U3417W USB upstream port
* Have you gone into the monitor Menu- Others and reset to Factory Defaults (page 53), then retested?
* Turn the room lights on. Run the monitor stand alone BID (Built-in Diagnostic) (page 64). Do the full colored screens flicker?