Why does the rainbow weather show that there is no internet, but there is?

1, there is something wrong with the computer itself, so it can't drive the connection network and needs professional maintenance;

2. If there is something wrong with the router or the cat, check whether the network cable from the router to the cat is plugged in, plug in the network cable from the router to the cat again, and replace it with a good network cable;

3. For external network problems, contact broadband operators to ask the reasons and solutions.