更新显卡驱动后看看驱动下载[url]http://support1.lenovo.com.cn/lenovo/wsi/Modules/Driverdownload.aspx?SearchType=1&LogicType=1&MachineId=-8731&SN=&IsBackPage=false&IsSeachOne=true&typename=IdeaPad+Y470[/url]
