XPS 8930, S2419H, vertical lines when playing video

Tell us what CPU, RAM, video card, and PSU you have in your XPS 8930.

Is the monitor connected to the add-in video card, or did you accidentally connect it the onboard Intel UHD Graphics HDMI port on rear of PC?

Is Windows set to the correct ("native", "recommended", "optimal") resolution for this monitor?

Have you read:  How to Troubleshoot Display or Video Issues on a Dell Monitor?

EDIT: Did this monitor come with its own driver and did you install it?

Hey, this is the machine I have.

Dell XPS8930 i59400, Nvidia Geforce GTX 1650 4GB DDR5, 8GB 1 x8GB DDR4 2666MHz Memory

Originally I was plugged into the motherboard HDMI slot now I'm in the HDMI slot for the graphics card and the problem still persists.

I'm also on the recommended resolution too.

And keep in mind that 8 GB of RAM may be a bit low for your games and/or the i5 may be too slow...

The first monitor should always be connected to the add-in video card.

Reboot and tap F12 when you see the Dell splash screen. When the F12 menu opens, look for option to run the diagnostics. Run all of them, including RAM and HDD.

Do you have the latest video driver?

Can you test this monitor on a different PC or a different monitor on this PC? Use the add-in card's HDMI port and the same HDMI video cable to connect to another monitor's HDMI port.

an i5 is slow? But it's a six core processor. The computer runs absolutely fast and fine to me. Football Manager works an absolute treat too - it's the only game I play so didn't need a higher processor. Since the computer and monitor are both brand new, it shouldn't be slow.

That said, I have tested the PC on the tv and there's no issue with any vertical lines on video. I plan to test again tomorrow on a HP monitor and see what happens.

I've done all the hardware tests, updated all drivers etc. Done video stress tests using Dell Support Assist etc all seems fine.

Have you gone to the monitor's On-Screen Display menu and tried a Factory Reset?

Your monitor settings should have changed back to all the default settings but nothing should have happened to your display screen. I was just wondering if that may resolve your issue with the intermittent vertical lines. 

I will test it later when I watch the football but so far I haven't seen any for the past two hours. I'll keep doing all the things I've been doing when I've seen them and report back.

I think @RoHe asked this question: Do you have the latest NVIDIA video driver?

So I decided to try watching different kinds of videos. I put Ghostbusters on YouTube and didn't notice the lines. But then I put football back on again and noticed them, particularly when the players are doing something with high movement. 

Odd, what could it be?

In addition to updating the video driver, did you ever install the S2419H monitor's driver and display manager app?

Did you follow all of these instructions regarding vertical lines?

And if it's only that one football game with problems, have you checked to see if there's an update for the game and/or if your video card and monitor meet the minimum requirements for that game? Check at Can You RUN it.

Check in Device Manager to see if the monitor driver is correctly recognized, eg has the version number mentioned in the driver file you downloaded and installed.

Latest Nvidia updates are all done. I did download the display driver for the monitor but I'll follow the steps you gave me too.

My computer and graphics card can handle the game in question. It's rated 5 out of 5 my graphics card for this particular game.

The lines I'm mentioning I can't show you a picture of. But they only happen in the video, they're not green or anything, they're just like pixel lines or something... I've e-mailed Dell in a private message with a picture. 

Touch wood but I'm playing Football Manager 2020 and watching the Champions League game tonight and so far I haven't seen any of the lines I've been witnessing. I'll continue to monitor it, no pun intended.