XPS 17 9710, green squiggly lines, video full screen

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I had the same issue that started about a week ago which I've now think I've resolved for currently available drivers where I've in effect gone to an older driver version.  Below photo of what I was seeing, black & white display, vertical lines, screen would flash with large black lines when I moved the mouse.

Sequence of events:-

• Installs Windows 11 (jan 2022) cumulative update, once complete this was the first time I got the display issue as demo'd in the photo.
• Went to Dell Update and installed any driver offered to me, from memory none were video related but related to thunderbolt, video display came back to normal 4k colour - thought I'd now fixed the issue.
• Few days later to yesterday I switch on laptop, Dell logo a boot looks fine but then in windows the displays look likes my photo below, reboot doesn't change the situation.  I install what Dell update is offered which was not video related and still had the issue.
• I plug in a my hdmi dongle and connect to my monitor and video display on laptop changes back to expected 4k, so I've got a work around but not ideal for long term, at least I'm now thinking the issue isn't hardware related and likely related to software updates.
• I go to the Dell driver website for my tag no and download the intel video driver and the nvidia video driver offered.
• I install the Intel video driver, dell offered me version from July 2021 (don't know why I was offered an older version as default)
  • Intel-UHD-Graphics-Driver_3PJD1_WIN64_27.20.100.9664_A02_01.EXE
• This has resolved my corrupted display issue, have rebooted my laptop a few times in the last 24 hours and the video display is back to what I'd expect 

I'll probable wait a couple of months now before updating my video drivers and also learn the lesson not to update my drivers as soon as they are offered to me.

I did get a private reply from @DELL-Cares, but in relation to a LCD dead pixel question. If I do get a reply for this particular issue I will share it here.

I like the laptop a lot, but there are some strange issues, besides the video playback. Having troubles with my USB mouse, which stops working after a few seconds and HD Audio drivers disappearing after a reboot, occasionally coming back.

I haven't see any of these issues on my old XPS 9560. I did a fresh Windows 10 install, and the issues with the mouse and HD Audio drivers disappearing are present there as well. Next step is probably downgrading the bios and see if that helps.

I like the laptop very much too. I am also coming from perfectly working XPS 9560 4K

I also noticed that my mouse that uses USB wireless dongle, from time to time stops working - it is a bit annoying as you start expecting the unexpected - and it is hard to focus working.

The USB dongle is connected to my monitor - and the monitor is connected to my laptop. I use the monitor as a hub for the mouse and keyboard only. Now I am testing with a dongle directly connected to the laptop.

For some reason the Microphone driver stopped working - I did a Windows 11 troubleshooting from the settings for the Audio device and it got fixed after a restart.

I am thinking if creating a restore point should be a MUST DO before any Dell drivers update from now on. Something that I never had to think about before. 

Currently playing videos works fine with this Intel driver Version: 27.20.100.9664, A01 (15 Jun 2021)

I have the same issue. After screen goes black (energy saving) it will come back like this! This issue arrised after a recent video driver update!

Wondering if any of you folks having side discussions with Dell support? Dell support is being very responsive in my case, but missing the mark with their questions completely. So far they just zoomed in on my mouse issue, completely ignoring the issues discussed in this thread, which I keep referring to in the private conversations I have with them.

I keep answering the same questions over and over again. It is getting so frustrating that I'm contemplating sending the machine back. Not only because of the niggling issues with the laptop, but also the frustration dealing with Dell support.

27.20.100.9664 is the only driver that's working for me. All the drivers after that have the same issue. Tried every single one of them up until 30.0.101.1340 (Intel Driver).

Interesting that you got the driver through windows update.