Interference appeared on the screen, what is the reason and how to fix it?

Question

Monitors

Interference on the screen, as in old TVs, when the connection is lost, but everything is in order with the monitor (it seems, because, for example, the menu of the monitor itself is shown without interference, interference is only in the picture from the computer), at first the video card stopped working, or rather the turntable is spinning , but the picture does not give out, there might be problems with the connector, then I connected it to the built-in video adapter, after a while these interference appeared. What is the problem and how to solve it?

Answer 1

maybe the cable, since the connector has changed and something is still wrong

Answer 2

Such things are easiest to solve by elimination. First check on another monitor, then with another cable, then with another video card (it can be built-in). So you will find the element that causes interference, and then you can fix it or replace it.