Happen today a very strange phenomenon, my system is windows 8.1, click resource management (including folders, My Computer, etc.), can be opened, the taskbar can preview just can not show up on the desktop, restart the computer good times or so.

Morning or normal, symptoms appear suddenly, and other applications that can be opened normally, there are many things waiting to deal with, very anxious, but for U disk is not close at hand, almost to reinstall the system. Figure:

Baidu a lot of content, basically the same situation, really like headless flies, it could be crazy.

Toss about 20 minutes, ready to give up at night to take home computer to reinstall it, but the activation of 8.1 and office headache, suddenly found the mouse to the right of the screen usually can swipe up menu, now only half a day out, does it here situation?

Found a little clue, it might be a problem with the graphics card set, then right, select the screen resolution.

Actually show "extend these shows", finally came to understand, if there are two monitors can display the contents of a folder on a second monitor to the right of multiple monitors. So this option to select "Show Desktop only on 1", symptoms can cure.

So what causes this malfunction is it?

Must have pressed the wrong button on the computer Fn + F3, a false alarm, I hope to give you a little inspiration.