After the computer is plugged in the Internet cable, it still shows that you can't surf the Internet, which may be related to the computer peripherals and may also appear in the network settings. You might as well take a look at the following tutorial on how to solve the problem of being unable to surf the Internet. I hope it will be helpful to you!
Peripheral failure: start up and check whether the network card light flashes. If it does not flash, it indicates that the external equipment has failed. Check whether there is a tightly connected interface. If you still can't access the Internet after confirmation, you need to contact the nearest business hall for inspection and maintenance.
Through the network diagnosis provided by windows: right click the small icon of network connection - open the network sharing center - click troubleshooting.
Click Internet connection - next.
The system will automatically detect the problem, and then follow the problem solving steps.
Through 360 network diagnosis: double click to open 360 security center and click more in the lower right corner.
First of all, the LSP protocol of the computer may be hijacked. Click LSP to repair it.
Then you will see the LSP protocol of the file. Click repair immediately in the lower right corner, and then check whether the computer can access the Internet.
If the above methods do not work, you can use the 360 off-line emergency box.
Conduct a comprehensive diagnosis.
Diagnosis in progress.
After diagnosis, it can be repaired. Usually, peripheral faults are eliminated, which can be repaired successfully.