I'm in the process of learning DirectX and in the book examples they have a very basic application which sets up DirectX and displays a blank screen. When I run this app however my computer starts making a whistling noise and I'm really curious as to why it does this.
If I maximize the screen the noise stops and this is the only time the noise happens. When I play normal games, run apps in XNA or do anything that doesn't involve directly using DirectX it doesn't happen.
The FPS is going up to 3000-4000 when the app is running and drops down to 1000 when the window is made to stretch the screen (and the noise stops). I'm taking a guess and saying it's something to do with that?
Anyway, does anyone have any ideas on what is creating this noise?