I went to work today, turned on the computer, logged in to WeChat, and found that there was no response. After investigation, it turned out that my computer couldn't connect to wifi. My computer model is dell inspiron 5409. Reasons:
1. Because my mobile phone can also be connected to wifi, it is normal, and it can go online, not the problem of wifi itself
2. Check the computer wifi, it is not connected, the wifi switch is also turned on, that is, no wifi can be searched (I have 2 or 3 wifi links here), and it is suspected that there is a problem with the wifi hardware;
3. Enable the flight mode, and then turn off the flight mode, it is invalid;
4. Turn off wifi, and turn on wifi, which is not too small;
5. View the properties, the prompt is normal,
6. Start the check and repair mode. Computer crash.
There is no response when you press any key, including insert, and there is no response at hot start; the machine is forcibly shut down;
7. Restart the computer and find that everything is normal without any problems;
Just make a few records and see if this situation will be discovered in the future;