Why does wifi have an exclamation mark?

The reasons why wifi has an exclamation mark: 1. There is a problem with the connection; 2. Some functions of the router are abnormal; 3. Network failure; 4. Abnormal handshake; 5. Computer DNS information has been tampered with; 6. The current WiFi network is not Not connected to the Internet; 7. Broadband arrears or broadband line interruption; 8. Network cable not plugged in properly; 9. Router hardware problem; 10. Mobile phone system problem, etc.

The operating environment of this tutorial: Windows 10 system, Dell G3 computer.

The reason why wifi has an exclamation mark

1. There is a problem with the connection

There is a problem with the connection, resulting in the network not being connected successfully. You can replug the network cable and connect to wifi to see if it can be restored.

2. Some router functions are abnormal

Some routers have been used for a long time, and the temperature of the router is too high, causing some functions to be abnormal. You can restart the router.

3. Network failure

In addition to the above problems, it may also be a local network failure. You can contact the operator's customer service to confirm whether there is a network failure.

4. Abnormal handshake

The WiFi signal is full and whether the WiFi can access the Internet are two different things. Whether the WiFi can access the Internet depends on whether the router can normally shake hands with the broadband server. An exclamation mark indicates an abnormal handshake.

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5. The computer DNS information has been tampered with.

It may be that the computer DNS information has been tampered with, causing the Internet to fail. Normal, try to use a third-party tool (Tencent Security Manager or 360 Guard) to reset the DNS server and then connect to the Internet.

6. The current WiFi network is not connected to the Internet

It may be that the current WiFi network is not connected to the Internet (Internet). Try to log in to the router's background to check the router's networking status, and log in to your broadband account again to confirm. Whether it can return to normal.

7. Broadband arrears or broadband line interruption

If you fail to log in to your broadband account, it may be broadband arrears or broadband line interruption. Try to contact the broadband operator’s customer service to confirm the broadband situation ( If you are in arrears, you will need to renew, you will need to wait for server maintenance, and if your broadband line is interrupted, you will need to apply for repair).

8. The network cable is not plugged in properly

The exclamation mark means that you cannot connect to the Internet. If you cannot connect to the Internet, the first thing we must consider is whether there is a problem with the network cable connecting to the router.

Some routers will have a strange problem after being used for a long time. If you don’t change the password in time, you will be unable to connect to the network. At this time, you only need to change the router password.

9. Router hardware problem

It may be that the router hardware is broken, resulting in the inability to connect to the network. In this case, the router device needs to be replaced.

10. Mobile phone system problem

It may be that there is a problem with the mobile phone system, resulting in the inability to access the Internet even though the WiFi is connected.

WiFi

Wi-Fi is also called "mobile hotspot" in Chinese.

Wireless network refers to "wireless compatibility certification" in the category of wireless LAN. It is essentially a commercial certification and a wireless networking technology. In the past, computers were connected through network cables, while Wi-Fi It is connected to the Internet through radio waves; the most common one is a wireless router, then the Wi-Fi connection method can be used to connect to the Internet within the effective range of the radio wave coverage of the wireless router. If the wireless router is connected to an ADSL line or other Internet lines , is also called a hot spot.

Main functions

Wireless Internet access can be simply understood as wireless Internet access. Almost all smartphones, tablets and laptops support Wi-Fi Internet access, which is the most widely used one today. Wireless network transmission technology.

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