The laptop can't find wifi, not all of them can't be found, only one wifi can be found by others, but I can't find it, and the router settings have not been changed

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The laptop can't find wifi, not all of them can't be found, only one wifi can be found by others, but I can't find it, and the router settings have not been changed
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Win7 has 64 users. The laptop can't find wifi, not all of them can't be found. Only one wifi can be found by others. I can't find it. The router settings have not been changed. They used it well in the past. One time, too many people used it View All

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Network connection method between computer and router:

[Home network environment wiring]:
1. With a cat (modem): connect the WAN port of the cat (modem) to the WAN port of the router; Connect the LAN port of the router to the computer.
2. No cat (modem): use the network cable to directly plug the network cable into the WAN port of the router; Connect the LAN port of the router to the computer.

[Set the automatic acquisition method of computer IP and DNS]:
The setting method in Windows 7 system is as follows:
1. Right click the "Network" icon, select "Properties", and then click "Change Adapter Settings";
2. Find the adapter list and right click "Local Connection" and select "Properties";
3. In the Local Connection Properties window, double-click TPC/IP protocol;
4. In the TPC/IP protocol window, click "Obtain IP address automatically" and "Obtain DNS server address automatically", and then click OK.
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Connect the Ethernet port, and then press the button on the router to automatically connect the laptop. The premise is that the notebook is connected to the optical cat.
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Try fn+f2 to turn on the wifi switch
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ZOL Q&A > wireless router > other > The laptop can't find wifi, not all of them can't be found, only one wifi can be found by others, but I can't find it, and the router settings have not been changed

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