1. Go to the Control panel of the system let's see what the reason is, in the "Start"-"Control Panel"
2. In the Open new window to find the "Sound" menu click to enter
3. Then in the Pop-up Voice dialog box to find the "Recording" tab, click to switch past.
4. Here we find the microphone to select him first, as shown in the following figure:
5. Then we right click on "Microphone" and then Find "Properties" menu click it.
6. Here you can set its "level" click Level tab.
7. This can be the "microphone" into the tune, adjusted well click "OK" can be.
If the above solution does not work, let's see if the following method works.
View any items with an exclamation point or question mark anywhere in Device Manager. then expand the "+" number in front of the "sound, video and game controllers" to see if there are any items with an exclamation point or a question mark below-if so, the sound card driver is not working or is not installed, you can install the sound card driver. (Figure 3)
The drive installation method is as follows:
1. Open 360 security guard-Drive Master
2. Open the drive master, find the sound card driver, click Install or update, follow the prompts to operate