控制面板里的声音属性把箭头所指打上对勾就行了；原因你输入了不正确的用户和密码，或连接是无效的电缆被拔出 630 The port was disconnected due to hardware failure This error occurs if you try to connect when WinPPPoverEthernetexe is not running or is not fully loaded Wait a moment and try again 630错误，硬件故障 631 The。