Shulou(Shulou.com)06/02 Report--

Problem description:

1. If you are using a local connection, first check whether the local connection Nic of the local adapter is disabled; you can reset it by disabling it and then enabling it. 2. If you are using a wireless network card to connect to the network: 2.1.First, check whether the connection is not available because the hardware lock of the network card cannot be closed by an individual or someone else; (do not underestimate this step, many students may use their own PC for a long time but often do not notice some details, such as Lenovo T420. ) 2.2. Check whether the adapter's Nic is enabled; because the bug of the software makes the current state unavailable even if it is activated, it is not uncommon; it is recommended that you first disable and then enable the adapter driver; 2.3, the ultimate trick: use driver management software for driver backup and upgrade operations.

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