更新声卡驱动(装完重启电脑)驱动下载:[url]http://support1.lenovo.com.cn/lenovo/wsi/Modules/Driverdownload.aspx?SearchType=1&LogicType=1&MachineId=-7758&SN=&IsBackPage=false&IsSeachOne=true&typename=Lenovo+G455[/url]
