What if the Win7 screen comes across?

Our computer screens are generally positive, but sometimes in some cases, our computer screen comes across, just like the phone has this function. Recently, the users of the Win7 system, the situation, the use of a good suddenly computer screen came across. What kind of situation is this? How to solve such a problem? Now it's up to the small and everyone to say Win7 computer screen across how to solve.

　　Action steps are as follows:

1, today I do not know what button to press, the screen becomes like this.

2, fortunately, I found this way. We click on the desktop right mouse button.

3, click to open the screen resolution.

4, click the direction of the display.

5, the original is the longitudinal change to horizontal can be.