Why can t I connect to my LAN?

As far as I can tell, there are probably the following scenarios:

1. Route failure (it is very likely that the DHCP service is turned off in the router and you cannot automatically obtain the IP address, it is recommended that you enable the DHCP service on the router or manually set the IP address, DNS, etc.).

2. Your network card is broken (this is very likely, it is recommended that you reinstall your network card driver, if not, buy an independent network card, about 20rmb).

3. The problem of the network cable (this is possible, it is recommended that you plug the network cable of your computer into someone else's computer to try, if you can, it means that the line is fine; If it doesn't work, it means that there is a problem with the network cable, especially the crystal head, please check it carefully).

1. The connection is restricted, which means that there is a problem with your network cable connection, first ping other computers or routers to determine whether the network connection is connected;

2. Another situation where the connection is restricted is: it means that your computer is directly connected to the router or modem to surf the Internet, and the status of the network card that goes to the Internet is like this;

3. Check whether there is a problem with the modem and ** line.

It is recommended that you first ping your classmate's computer, or router gateway, to use it.

Start-Run Enter cmd enter.

Ping IP address Enter.

time=<3ms or so.

You have to ping for 10 minutes to pay attention to the packet loss rate, not more than 90%, if it is, change the network cable.

Open Start - Settings - Network Connection - LAN or Tell Internet - Right Click - Properties - Internet Properties - General - Automatically Get IP Address, Automatically Get DNS Server Address (if you are using a router).

To see if it's an ARP attack, test it with specialized software.

Nowadays, with the popularization of wireless terminal equipment with wifi function such as wireless netbooks and smart phones, wireless broadband routing has been widely used, and with the wide application of wireless routing, there are also various networking failures caused by the improper use or setting of wireless routing. The following is what I have compiled for you about what to do if the LAN wireless network is not connected, let's take a look!

What should I do if I can't connect to the LAN wireless network?

01 The most likely reason is the problem of DNS address, the machine that can access the Internet may have a DNS address itself, and the machine that automatically obtains the address cannot get the IP address of the DNS server from the router, and the router cannot help **DNS resolution request This has become a problem. In fact, you can set the manually configured IP address change to automatically obtain the IP address.

02Open the Control Panel and find the Network and Sharing Center.

03Find the connected wireless NIC, right-click the wireless NIC properties, find the IPv4 protocol, and click OK.

04 Then change the settings to automatically get IP address and automatically get DNS server address.

05Check the router settings, if DHCP and other services are not enabled, the wireless network may not be used properly.

06 First open the browser of the computer connected to the current wireless router, enter part of the router in the address bar, check the bottom label of the router to know), log in to the web configuration interface of the current router, and the default user name and password are admin.

07 Click on the DHCP server to enable the DHCP function, so as to ensure that the router can assign an IP address to the device when it is connected to the LAN port or WiFi.

08Check whether the wireless router has filtered out the MAC address, if so, you need to add a new MAC address in the router settings. Otherwise, only devices with a specific MAC or IP address will be able to connect.

09If the above method doesn't work, disconnect and re-enter the password to connect.