Software that makes the top end of my screen brighter?

[bonickhausen]

Hi!

I am stuck with an old monitor. I have no choice but to put it in a high place.

However, depending on its angle, the screen gets brighter/darker.

In my comfortable sitting position, the top end of the screen gets too dark.

Is there any software that allows me to tint one of my screens with a brightness "gradient"?

It needs to work properly in a multi-monitor setup, that is, it should only affect one monitor.

[Xyrec]

Sounds like the monitor has a TN panel. If it's possible, you could flip the monitor upside-down and then rotate the image 180 degrees in Windows. That should fix the issue