The computer is restricted or has no connection, saying that the reason is that the computer is not

If the network you are joining is bound to the IP address and the switch port, you need to manually assign the IP address, you can manually specify the IP, you can right-click the network neighbor - properties - local connection - attribute double-click the Internet protocol, in the general tab to set the IP The general IP address is set to or the number can be specified between 2-255 at will, if the router has no limit, the subnet mask is generally; The default gateway is generally or, and the previous IP address is corresponding, determined by the IP of the router, DNS is different from Netcom Telecom in various places, you can find it on the Internet.

If it's just an ordinary telecom Internet connection, you have to see if your computer is poisonous.

Some computers need to manually assign an IP address, you can manually specify the IP, generally using a router to surf the Internet will cause such problems.

You can right-click on the Internet Neighbor - Properties - Local Connection - Properties double-click the Internet Protocol, and set the IP in the General tab. The default gateway is usually or, corresponding to the previous IP address, which is determined by the IP address of the router.

In addition, DNS is different from Netcom Telecom in various places, and my side is Zhumadian Netcom, which you can find on the Internet.

Set the IP manually and try it.

I'm in the same situation as you, I've tried a lot of things that didn't work, and now I've found the problem, redo the system! It took my roommate ten minutes to do it, and now it's completely fine. Really, why don't you adopt it.

Your gateway shouldn't be set up to look like theirs. If you're not connected to the internet with broadband, it may be that the version of the internet tool is too low.

Right-click Local Connection -Properties-Configuration-Advanced-NetworkAddress

Try writing an address yourself, I once encountered the same fault as you, and this is how it was solved.

1.Log in to the router, take a look at the configuration of DHCP, whether the address pool has been modified, see if there is a MAC address binding, firewall, etc., if you understand the router, go up and see, if you don't understand, I didn't say it.

2.The NIC is set to be acquired automatically.

3.If the router is fine, reinstall the system.

The above 3 points have been checked, and if you can't go up, you will go to the temple to burn incense and ask for the Bodhisattva.

Many national routers have DHCP problems, in this case, it is recommended that you change your friend's IP address to manual settings.

Steps: Click on the small icon to surf the Internet -> "Open Network and Sharing Center" --"Change adapter settings" on the far left -> Double-click on your NIC or right-click on the attributes, select the "Internet Protocol Version 4" attribute, "Use the following IP address" and "Use the following DNS server" and then change the IP address and it's OK.

Change the IP address and DNS server, on your computer, enter "cmd" in the box below the start menu, and then enter "ipconfig all"."Then you can change it according to yours. For example, if your IP is the subnet mask and the gateway is DNS, then your friend can use the subnet mask: gateway DNS

That's it.

LAN IP address conflict, do you have a router at home? You can buy a dplink with its own account to crack and share, which means that two computers can use one account to access the Internet.

It means that the computer does not obtain the IP, and the computer communicates with other computers through the IP;

Network address is a three-layer concept, generally as long as you surf the Internet, you will use IP, so that other computers can find your computer;

Without a network address, your computer can't access the Internet, and the network icon is generally an exclamation point;

It is impossible to open a network icon in the lower right corner of the computer desktop, click on it and a display box will come up Click on the general to see your IP address.

1. The wireless router is set up with "MAC address filtering", my wireless router is like this, there is no password, but only the wireless network card with the MAC address added can pass through this router. You need to add the MAC address of your wireless card to the MAC filter section.

2. DHCP service means that the wireless route will automatically assign an IP address to the legitimate terminal on the connection (such as the previous case, the one without adding MAC is an illegal terminal), and its value is from small to large in the set IP address pool. Static address assignment is to set the terminal of a certain MAC to assign the same IP address every time, for example, set your network card to assign a static address, then when other computers are connected, they will be assigned to him when they are ,,, to the assignment, because his MAC does not match the static allocation. But in this case, if he forcibly sets the IP to, he can still connect.

So we have a means to bind the IP to the MAC, and the IP of the MAC is bound, even if you manually set this IP, as long as the MAC does not match, it is not allowed to surf the Internet.

If the inability to obtain an IP address is an accidental phenomenon, you should check whether there are too few address pool segments allocated in the DHCP server. Assuming that you only allocate these 11 address pools, the 12th machine will not be able to get the IP address when it is connected. Expand the address pool appropriately.

Do you have a DHCP server in your network (usually gateways such as routers have DHCP function)? If the DHCP server is not enabled, when the computer is set to automatically obtain an IP address, the local connection will display "Limited or No Connection" when the acquisition times out. We recommend that you enable DHCP, set gateway addresses and DNS addresses, and set IP address pools.

In this way, you can set the computer to automatically obtain IP and DNS in the future, which is more convenient to maintain and manage.

1. First of all, check whether the wireless router is correctly connected to the network and connected to the external network;

2. Secondly, check whether the network parameters (subnet mask and gateway) set by the computer are consistent with the network parameters set by the wireless router, and it is best to set it to automatically obtain;

3. Thirdly, check whether the wireless password is entered correctly;

4. Fourth, check whether the dynamic IP segment set by DHCP of the wireless router is sufficient [for example, if 10 dynamic IPs are set but 11 devices are connected (the total number of wired and wireless networks), the address will be insufficient].

1) If it is a problem with the broadband itself, first directly connect the broadband network cable to test, if it is a broadband problem, contact the broadband customer service to solve it.

2) If it's a problem with the router, if it can be used originally, it can't be used for the time being, my own practice is to disconnect the power of the router and plug it in, and I'll take a look. In there is a factory reset, from the new strict according to the manual settings can be used, I don't understand, it is not recommended to set it at will (this is under the premise of the correct physical connection, sometimes the router is slow or failed to find the IP address, not that the router is broken).

If it can't be solved all the time, it is recommended to call the customer service of the router, they have **** guidance, I encounter a problem that I can't solve by myself, it is very useful to consult the advice they gave, and they will give the correct advice for your settings or operations.

3) If you turn off the wireless switch, turn it on, if it is a wireless connection with software, it is normal for the software to be difficult to use and often have problems, there is no better way, use a router. In addition, it is caused by the network card driver is not or is not suitable, and whether there is a problem with the network cable interface or network cable.

4) If it is caused by a system problem, it is recommended to restore the system or reinstall it.