If you can't connect to either a wired or wireless network, try the following steps:
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1. Check whether the network is normal: Check whether other devices can connect to the network, or contact the network service provider to check whether the network is faulty.
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2. Restart the network device: You can try to restart the router, modem, or other network device, sometimes the device may fail or need to update the configuration.
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3. Check cables and ports: Ensure that cables are not disconnected or loose, and check whether device ports work properly.
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4. Update the network driver: If you are using a computer or laptop, you can try to update the network adapter driver.
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5. Check network Settings: You can try to check whether the network Settings of the device are correct, such as ip address, subnet mask, gateway, and so on.
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If the fault persists, contact the technical support department of the network service provider or device manufacturer for further help.