I am concerned my monitor is dying！

I've been using an Asrock PG27FF1A monitor, which is about 2 years old, as my secondary display. I've had it set up in a vertical orientation for quite some time. Recently, while playing Baldur's Gate 3, I noticed a significant line on the screen that wasn't there before.

I've tried troubleshooting the issue by swapping out the cable, trying a different port, and even testing it with my laptop, but the line remains. Given this sudden appearance of a problem and the fact that the monitor didn't suffer any visible physical damage, I'm concerned that it might be on its way out.