Press Alt + Tab to select the off-screen window
Press Alt + Space
Press M
Use the arrow keys to move the window
Press Enter when the window is visible
Right-click the taskbar and choose Cascade windows
Right-click the taskbar and choose Show windows stacked
Right-click the taskbar and choose Show windows side by side
Use Win + Shift + Arrow to move the window to another monitor
Change display settings to make the hidden window visible
Drag the window back after restoring it from the taskbar
Use the window’s Move option from the system menu if available