Head to Microsoft's Media Creation Tool.

If updates fail, run the Windows Update Troubleshooter (see below, number 3)

Open Control Panel and then run Windows Update and ensure that the PC is fully up to date.

Adjust the dialog window to center screen and then exit the program before setting the display back to Extend.

With multiple displays, press WINDOWS + P and then choose PC screen only.

Move the dialog window in question to center screen (or toward the upper left) and then exit the program before changing the screen resolution back to what it was. This should bring all dialog windows back into view.

Change the screen resolution to a different value, smaller or larger.

Click the left mouse button to cancel the operation.Move the mouse to bring the window into view.Press the M key and tap any ARROW keys.Execute the command to activate the dialog window.Try this first on a visible window to see how it works: Use the keyboard to move the window into view.This moves windows between screens and will pop the missing dialog into view. Hold down the WINDOWS + SHIFT keys and then press the LEFT or RIGHT ARROW key on the keyboard. Move the window to a different monitor.The 'ding' sound is the default Windows alert when you try to click outside a modal dialog.Pressing the Esc key is equivalent to clicking the Cancel button in the window, which restores control of the program.The program continues to put the dialogue box at the last-known X/Y position on the no-longer-present second monitor.For example, when an application is opened on a monitor with different resolution settings or with a dialogue that was positioned on a secondary monitor that has been disconnected from the system. A window might come up off-screen if it was last positioned at a point that is no longer viewable. Most programs maintain the last positions of their dialog windows, expressed in X/Y coordinates for the monitor.AutoCAD's variables changed to non-default values.Changes in the number of monitors connected to the computer.

Windows 7 dialog box for windows 10