UPDATE: gave another try via email (1st was phone), got a replacement device now
Hi Dell community  In January 2022, I bought a S2722QC monitor directly from the Dell website. I connected it via USB-C to my laptop and via HDMI to my desktop. Both worked without any issues.  After roughly a year of normal use, the screen started going black for 2-5 seconds once or twice a day. As this happened intermittently, I suspected a software glitch after an update or something similar.  Yesterday, when I returned from my lunch break I found the screen black, with very slightly visible vertical stripes in the left screen area. I again suspected a software issue / computer crash, so I restarted my computer. There was no change, the screen remained black with barely visible vertical stripes, regardless of whether any input source was connected or not.   I tried the monitor reset and the self test, but the screen failed to display any content whatsoever (including self test info). The faint pattern on the screen has disappeared entirely now, only showing a black / grey (due to the backlight) screen. The power LED is illuminated, and the monitor is correctly detected by the OS, but there is no content at all!  I contacted Dell support, sent in photos of the monitor with the pattern on the screen, but was refused a replacement due to "physical damage" / ”accident”. However, no physical impact at all has been involved here. Rather, the monitor has been standing on my desk at my home to which I am the only person with access and has remained unmoved since I bought it. There are no signs of impact anywhere on the monitor, and the glass is 100% intact. It simply stopped working entirely after what seems to be in hindsight an electronic fault of the item showing up as mini blackouts before it eventually did.  I would be glad to have any technical advice as to the possible reason for the issue as well as guidance on how to proceed in order to have the monitor replaced (or repaired) by Dell as the fault is clearly with the item and not with my handling of it.  
[SOLVED] S2722QC, Dell EURO support denied exchange