How to adjust the one-button audio and video mode under Win8 system?

Fault phenomenon:
When using the one-key audio and video function under Win7, there will be a mode status bar display in the middle of the bottom of the screen, and after the computer is modified Win8 system, the one-button audio and video button does not work.
Cause analysis:
Under Win8 system, the one-button audio and video function cancels the transition bar in the screen display mode state, and the hint bar is not normal.
Solution:
1. First of all, you need to confirm whether you have installed a key audio and video function under Win8. You can check whether there is a key video program in the uninstaller list, as shown below:

or Check if the taskbar notification area program icon exists, as shown below.

2. As mentioned above, when checking the installation and running normally, you can click the notification area one-click video program icon by using the one-button audio button or mouse. Switching is done in two ways.
As shown in the figure below, the program icon changes each time you press the button to restore the button.
Normal Mode:

Picture Mode:

Audio Mode:

Music Mode:

Remarks:
When the machine is installed with Dolby In the case of SRS sound software, if the one-button audio and video mode is switched to the normal mode or the picture mode, the Dolby effect or SRS sound effect will be automatically turned off; in the audio and video mode and the music mode, the Dolby or SRS sound effect is automatically turned on.