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Why can’t the computer connect to wifi but cannot access the Internet?

1. Computer IP and DNS are automatically set. 2. Open the browser and enter 192.168.1.1 in the address bar (this is the general router address or check the login information on the back of the router) - enter the user name and password (the default is usually admin). [Set router dial-up]: 1. Select PPPoE dial-up (some are ADSL dial-up) in the setup wizard, enter the user name and password for Internet access according to the prompts, and save. 2. In Network Parameters-WAN Settings, select Normal Mode and select PPPoE dial-up from the three connection options. The following is to select automatic connection, save and exit. There are many situations where the computer cannot connect to the wifi! First, IP cannot access the Internet without authorization. It depends on whether there are any restrictions. Second, many telecommunications distribution optical modems have limited access to the Internet. For example, four of our computers can access the Internet, but others cannot access the Internet. Third, some wifi routers are not connected to the Internet. I can't get online even if I turn on any wifi signal. First, connect via network by enabling Obtain IP address and DNS server automatically Step 1: Press the keyboard shortcut Win+X and select Run. Step 2: In the run command window, enter ncpa.cpl, click OK, and open the network connection window. Step 3: Right-click on your active Wifi connection and select Properties. Step 4: In the newly opened window, under Network: Select Internet Protocol 4 (TCP/IPv4) and click Properties below. Step 5: In the window that appears, select Obtain IP address automatically and Obtain DNS server address and click OK to save the changes. Step 6: Now, click on the Advanced button below. Step 7: In Advanced TCP/IP Settings, go to DNS and uncheck Register addresses in DNS for this connection, click OK, save changes and exit. Now you can try to connect to the internet. If that doesn't work, move on to the next method. Second, change the DNS server address Step 1: Right-click on the Start menu and select Run. Step 2: In the Run Command window, enter ncpa.cpl and click OK. Step 3: In the newly opened window, select the active WiFi connection, right-click and select Properties. Step 4: In the window that just opened, select Internet Protocol 4 (TCP/IPv4) and click Properties. Step 5: In the window that just opened, choose to use the DNS server address below. Now you add a Google server as follows: Preferred DNS Server: 8.8.8.8 Alternate DNS Server: 8.8.4.4 Click OK to save changes and exit. Now go back and check if the internet connection is restored. Third, use Command Prompt to reset Winsock If you see a yellow triangle with an exclamation point in the middle, it means the Internet is not available. We can try to reinstall Winsock and do the following: Step 1: Right-click Start and select Run to launch the Run command window. Step 2: Now type cmd and simultaneously press Ctrl+Shift+Enter to open the command prompt (administrator).