The wifi is connected but there is an exclamation mark, which may be caused by incorrect routing settings. The solution: 1. Check whether the router and broadband line interfaces are loose; 2. Double-click to open the "Control Panel" of the computer. Then open the "Network and Sharing Center"; 3. Click "Change Adapter Settings", and then select the "Obtain an IP address automatically" and "Obtain a DNS server address automatically" buttons.
#The operating environment of this tutorial: Windows 10 system, Dell G3 computer.
What should I do if the wifi is connected but there is an exclamation mark?
It may be caused by incorrect routing settings or local line problems. If it has always been available but suddenly cannot access the Internet, it means there is a local line problem. It is recommended to restart the router. If it does not work, it means there is a line problem. Please call the operator's customer service for warranty.
1. When the computer is connected to WiFi, a yellow exclamation mark will appear. This situation may be due to the instability of the WiFi connection. First check whether the router and broadband line interfaces are loose. Tight connection.
#2. If the above is normal, then we can restart the computer to see if we can connect to the Internet normally.
3. If you are still unable to connect to the Internet, another situation may be that the DNS address of the computer IP has been tampered with. You need to perform operations. Start by double-clicking to open the computer's [Control Panel] 】.
4. Then in the computer's control panel page, click the "Category" button in the upper right corner. Some drop-down option menus will appear. Click the [Small icon】.
#5. Enter the page and double-click the [Network and Sharing Center] button on the computer page.
#6. Click to enter the Network and Sharing Center page and click [Change Adapter Settings] on the left.
#7. When entering the network connection page, select the WLAN button, right-click the option, a window will appear, and then click the [Properties] button.
#8. A window will appear, double-click it and open the "Internet Protocol Version 4 (TCP/IPv4)" button.
9. Another window will appear. Here, select the buttons of [Obtain IP address automatically] and [Obtain DNS server address automatically], and click the "OK" button. , finally the computer can be connected to the Internet.
Notes:
1. Router networking failure
If the router fails to connect to the Internet, that is, the connection between the router and the operator's server Unsuccessful, unable to transfer data. At this time, after Win7 connects to the router's wifi, an exclamation mark will appear, prompting limited access rights.
2. The router restricts computers from connecting to wifi and surfing the Internet
First of all, everyone needs to know that there are some functions on general wireless routers that are used to restrict computers and mobile phones from accessing the Internet. Common "wireless MAC address filtering", "device management", "Internet access control", etc.
3. Laptop problem
If you restore the router to factory settings, after resetting, other computers and mobile phones can access the Internet when connected to wifi, but only this Win7 laptop cannot access the Internet when connected to wifi. It can be determined that the problem is with this Win7 laptop.
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