On the nView Desktop Manager window's User Interface tab, clear all 4 of the Title bar buttons check-boxes.

Here are further details of nview.dll, and whether it might. If you're a mouse user, you might never notice, but I'm a heavy keyboard user. The nview.dll process is part of NVIDIA nView Desktop and Window Manager of NVIDIA Corporation. I suspect that focus is on the added icons, instead of the real window.

If you open an application window, the title bar will show you that it has focus (see problem above), but pressing Alt-F4 doesn't close the window (because it doesn't really have the focus).It shows the focused color when you don't have the focus, and vice versa. Sometimes the color-coding of your title bar (that indicates which window has the focus) can be backwards.However, when you enable these, you can wind up with some obscure focus problems: One feature provided by NVIDIA nView Desktop Manager is that it can add some icons to your title bar (just to the left of the minimize/restore/close buttons) to support window roll-up, move-to-next-display, and maximize-across-multiple-displays.

Nview desktop manager