One of the advantages of Microsoft Windows PCs is that you can have many different programs and windows open at the same time. This advantage becomes a disadvantage, however, when you have to close a dozen open windows – that’s where using keyboard shortcuts can help.
Alt + F4 is easier
This is the most common one, You can do this by two fingers.
CTRL + W is Worth Knowing About Too
This shortcut is not the same as Alt + F4, which closes program windows. Ctrl + W only closes the current files you’re working on but leaves the program open. This can be handy if you want to leave the desktop program open but get rid of all the files you’re working on in quick succession.Ctrl + W works in most browsers too allowing you to close the current tab you’re looking at without taking your hands off the keyboard.
Don’t forget to Alt + Tab (not for closing programs)
But what good is using a keyboard shortcut if you’ve already got your hand on the mouse to select a window? Press Alt + Tab (Windows XP and up) to cycle through your open windows without taking your hands off the keyboard. Use this shortcut in conjunction with the close window shortcuts and you’ll be an efficiency dynamo.
The Hard Way – Alt, Spacebar, C
First option:
Go to the window that you would like to close using your mouse.
Press and hold down the Key, press the Spacebar. This reveals a right-click context menu at the top of the program window you’re trying to close. Now release both keys and press the letter C. This will cause the window to close.
If you use your left hand to do this sequence (in other words put your left thumb on the space bar, and not your right hand), you’ll be able to close roughly a dozen windows in about as many seconds.
I Just Want to See the Desktop
Sometimes you don’t actually want to close all those windows.Press the Windows logo key + D, and you’ll see your desktop. To bring back all your windows just tap that keyboard shortcut again.