Insert Silence Dialog Box Not Showing Up

When this happens with any sort of dialog prompt, it's usually behind the main screen. But I have to say in the same breath that it really shouldn't happen at all. When that sort of dialog box pops up, it defaults to sitting centre-screen and in front. You can move the box temporarily if you want, but next time it's called, it's back to where it should be. So if you pick up the whole main screen and move it, and it isn't there, then we'd have to be looking at a different situation, and there's only one that comes to mind - and that's that your PC's video driver has refused to display it as a separate entity. If this happens, then the thing to do is to find out whether there's an updated video driver available. You may think that's a bit far-fetched, but believe me, it isn't... I have to update the video driver on my DAW regularly because Microsoft have done something strange and unnecessary with their updates. I think they do it just to keep Nvidia on their toes, but updating really does keep it performing correctly, which it doesn't otherwise. So it's well worth checking.