Sounds like your graphics card is the problem.
If it’s a desktop computer you could replace the card.
If it’s a laptop, you’re out of luck.
CAUTION: I am not an expert.
“Dude! You got a Dell!”
When happened to me they said it was the LSD.
Two computer geeks walked into a bar...
+1 on the graphics card in your PC.
(Also not an expert.)
Did 11 yrs as It in a HS, I have always had good results with HP or Acer monitors Square or Rectangle. That said I would agree the graphic card is suspect. Does the Ghosting start right away or over time?
Can you rule out power surges or brownouts?
Hook up the monitor to another computer (if you don’t have another computer, ask a friend). Use a different cable. If the problem goes away on another computer, it is probably the video card. If the problem does not go away, it is the monitor.
I WANT A VIDEO OF THAT PHENOMENON!
Seriously...
Need a lot more info. You said a long time...how long? Assuming it’s a desktop, what brand and model is the video card. What resolution is the monitor and what resolution is the card configured for (settings in Windows)? How old is the computer?
I recently got a pretty newish Dell computer from my brother. It is small-footprint, and as a result, or consequence, will not accept any add-in cards. It has, as its native video output, two HDMI connectors. I have, in an old box of cables, 2 qty HDMI cables. This computer worked TWO WEEKS ago. I can’t get video out of it. At all.
I will say without hesitation that HDMI is by far the worst connector design ever conceived by mankind. There is no mechanical support, no strain relief, no means of retention. The connector really does not extend far into the socket even when “fully” inserted.
I have not fixed this problem yet, but I’m gonna say with 75% certainty, the problem is with the HDMI connection, most likely the (a) HDMI cable. .
Can you post a screenshot?
Don’t get me wrong, I have 2 Dell laptops and love them. But Dell would not be my first choice for an external monitor. I prefer Acer monitors. My first one lasted 13 years before it got a bit squirrely. I bought a 27” Acer earlier this year for $150, and it’s spectacular. Don’t mess with refurbished.
1. Replace the cables.
2. Replace the graphics card.
Make sure both are compatable with the monitor.
No it's not talk like a pirate day.
Remove and reinstall graphics drivers, update if available.
Remove and reinstall graphics drivers, downgrade if recently updated.
Remove inspect and clean cable connectors, reconnect.
Laptop, blow out vacuum all ports and or open case, clean out dust. The video chip may be running hot.
PC/desktop,blow out vacuum all ports and or open case, clean out dust. Clean and remove and reseat video card.
Since there have been multiple monitors tried the issue is most likely the computer, video card video settings, video drivers.
keep good notes on what you have done you will need them....
My monitor had a similar problem, sort of a bleed thru coming across the screen from the LEFT margin smudging across the left side. Turned out to be the monitor power cable was sort of pulled out. Good luck!