Lenovo laptop Y450 remove the battery connected to the power, press the power button lights on the display did not
There are two ways: . directly to the material into the video track (V track) or subtitle track (T track) . material on the audio and video track (VA track), select the material, right click on the menu In the election "unlock" will be video and audio separation, and then select the audio part, you can delete. "Unlock" shortcut key for the Alt + Y, select the material, press Alt + Y, video and audio separation, and then select the audio part, delete.