Usually on the bottom left corner of the screen (next to the "start" button) the is an icon "Show Desktop".
This is partially true but actually this doesn't minimize windows, it just hides them. There is not button for this but the keyboard shortcut is windows key + M and to reverse it the shortcut is windows key + shift + M
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On the keyboard, for windows systems, you press the indows key (has the windows symbol on it) and the letter 'D'. This should minimize all windows and show the desktop. Alternatively, you could press the windows key and then select all the programs/windows from the taskbar itself.
[windows key] + [D] - will minimize all the windows and show your desktop. Pressing it again will bring the windows back up. Note: You have to press the keys at the same time. If you're having trouble, hold down the windows key, and keep it depressed, and tap the [D] key.
If you are in Windows 7, you can click (on the start bar) the box on the left of it. If you are in Windows XP or lower, click the icon on the Quick Launch Bar that has a message on it stating "Show Desktop"
Alt-Tab (Windows)
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To minimize a game in Steam, you can press the "Alt" and "Tab" keys simultaneously to switch to another application or window. Alternatively, you can press "Windows" key + "D" to minimize all open windows, including the game. In some cases, you can also use the Steam Overlay by pressing "Shift" + "Tab" and then clicking on the minimized game icon in the taskbar.
To effectively soundproof your home windows and minimize outside noise, you can use soundproof curtains, weatherstripping, acoustic panels, or double-pane windows. These methods can help reduce the amount of noise that enters your home through the windows.
I have found a method using X Windows Dock, but I don't like the look of that dock!!
press "ctrl alt delete" or press the windows key.
In order to minimize the taskbar for a computer running on the Windows OS, one must first right-click the taskbar and make sure the taskbar is unlocked. When unlocked, the mouse may be hovered over the edges to minimize it or maximize it.