Your case should be that the driver of the wireless network card is broken, or the wireless network card is broken, the normal wireless network card is detected, the icon of the unconnected is
Your x indicates that the wired network is not connected, that is, the cable is not plugged in. Your computer does not find a wireless card, the hardware reason is that the card is broken, the software reason is that the driver is not installed, or you have disabled the wireless card.