The new monitor is showing random lines and artifacts, but I don't know what's causing it.
The new monitor is showing random lines and artifacts, but I don't know what's causing it.
My friend recently purchased a new AOC 24G2ZE 240Hz 1080p monitor two years ago. After about six months, random lines began to show on the screen and eventually the device stopped working. Now he has upgraded to a Dell G2725D 180HZ 2K monitor, but after five to six months of use, lines and artifacts still occasionally appear on the display. We replaced several components:
Old parts:
- Gigabyte A520M-K V2 MB
- Gigabyte H110M-K DDR4
- Deepcool PK800D PSU
- Matrix 800w generic PSU
- 1X Netac Shadow 16GB 3200mhz RAM
- 2x8GB DDR4 2666mhz RAM
- RX 570 8GB Asus Strix GPU (donation from my old PC)
- Gigabyte 1050ti 4GB GPU
- Ryzen 5 5500 CPU
New parts:
- Used DP cable from Dell
- Fresh Windows 11 installation with all drivers updated
- Checked all connections
- BIOS is up to date
- Ran FurMark and encountered a blue screen after ten minutes, but no artifacts appeared
- Swapped the Netac 16GB RAM module for two new Kingston 8GB 3200MHz modules (XMP enabled)
- Tested the new Netac RAM on another computer; it worked fine
- All component temperatures are normal
- Replaced power cables
Tomorrow I plan to try a different GPU, but I’m not sure that will solve the issue.
The PC and monitor are both plugged into an extension cord shared with a PS4 and a 50-inch smart TV.
I’m still puzzled about the cause of this problem...
To simplify the process, perform a basic test:
Use capture software to record the desktop, aiming to capture when lines or artifacts appear. Then review the video and check if similar lines or artifacts are visible there as well. It might help to inspect the video frame by frame to confirm their presence (for example, using VLC’s step-through feature).
If artifacts appear in the video, the problem likely lies with the system—such as MoBo, GPU, RAM, etc., because capture occurs before the image reaches the GPU. However, if the video is free of artifacts, the issue could be after the image leaves the GPU. You can verify this by checking your monitor, display cable, or the display port connected to the GPU. For less common cases, consider EMI.
I brought his PC home for testing on my DELL S2522HG 240Hz monitor. Played Aida64 stress test, adjusted resolution for six hours without any artifacts or lines. After returning to his home, I connected his G27 monitor in hopes it might be faulty. It was tested and ran at high frames in games like Minecraft, but still no lines appeared.
I recorded a video using AMD Adrenaline software and checked frame by frame—still no visible lines, unlike during recording. I also swapped the GPU with a new RX 570 from the box and again saw artifacts on his monitor.
To confirm there was indeed a problem with his DeLL G27, I tested it with my PC and found absolutely no artifacts. It’s still unclear what’s causing the issue, but both devices function properly when used separately.
I’m considering purchasing a new DP cable and power cord, and possibly reverting from Windows 11 to Windows 10 for troubleshooting.
Thank you.
It seems the monitor functions properly with your PC, so the problem might lie elsewhere. Possible causes include EMI from nearby big appliances or low-quality hardware lacking proper EMI filtering. It could also stem from an AC unit on the opposite side of the wall generating interference. EMI is challenging to pinpoint due to its subtle nature. Switching operating systems after the end of Windows 10 support isn't advisable, and the observed artifacts suggest a mechanical or physical fault rather than a software issue.
If you wish to experiment with different operating systems, consider creating a bootable GNU/Linux distribution on a USB thumb drive and launching it in trial mode. This allows OS testing without installing it permanently or altering the Windows installation.
Guide reference: https://pendrivelinux.com/universal-usb-...-as-1-2-3/
I recommend using Linux Mint, as it closely resembles the Windows GUI. You're free to pick any GNU/Linux distribution.
I also have a bootable Linux Mint USB for recovery use (e.g., when Windows stops functioning and you need access to data or want to use your PC).
Once you boot from the USB, you'll see the Linux Mint interface.
Direct link if image doesn't load:
https://fostips.com/wp-content/uploads/2...b-menu.jpg
Instead of installing Mint on the drive (OEM setup), choose the "Start Linux Mint" option so the entire distribution loads into RAM. This method lets you boot a live Linux Mint desktop without installation, though it may take some time.
Installed Wallpaper Engine directly into both PC and monitor using a power outlet
Tested the cable on my monitor and it functioned properly
Swapped out the keyboard and mouse
Turned off all electronic devices in his room, including TV, PS4, and Digital TV Receiver
Currently there are no lines visible on his monitor, and I hope this continues.
Thank you again