Windows 7 volume when the big problem is small

Friends often use Windows7 to watch movies to listen to music when the sound is often large and small, and later found that watching video or listening to music while opening QQ or MSN, etc. The problem with communication tools is that the volume becomes smaller whenever a QQ message comes. How to solve this problem?

In fact, this is a new "communication" function of Windows7. When using a PC to make a call or answer a call, Windows can automatically adjust the different volume. So when there is a message from QQ or MSN, Windows will automatically reduce the sound because of the sound.

Solution:

1. Under the control panel, find: Hardware and Sound -> Sound, which has several functions such as "adjust system volume" and "change system sound".

2. Click on “Sound” or “Change System Sound” and select the “Communication” tab. Select "Do not perform any operation when Windows detects communication activity:".

This solves the problem of large and small Windows 7 sound.