The company s computer can t be connected to the Internet, so please ask the big brothers and sister

First look at whether the network card light is normally lit up, and see if it works together! If there is no problem with the settings and spelling, it means that there is something wrong with your computer.

Is there anything wrong with the network cable?

Can you be specific? Is there a network cable?

The landlord's question was not clearly stated. Does the computer not connect refer to a cross in the lower right corner, or does it mean that it is not connected to the Internet? If it's the former, then replace the network cable or redo the crystal head.

The network port of the computer is generally not broken, of course, it is not excluded. If it is the second option, then check whether the computer IP is set correctly, or if the NMS has imposed any restrictions on the computer. The second question, see what is the structure of the landlord's network, if there is a router in its own network, then you have to set up the router you access behind, such as changing the IP address, and turning off the DHCP service.

This is because DHCP is enabled for both routes, and the IP addresses of both routes are the same, which will inevitably cause conflicts. As a result, the landlord cannot access the Internet.

In the case of people like you, you can't access the Internet from time to time, most of them are because you use an automatically assigned DNS, which leads to a lack of access to the Internet. Try it yourself.

1. This problem should be judged to be a computer setting or system problem;

2. The router cannot be accessed, and it is estimated that the interface is used incorrectly. Intranet routers are generally used as switches, and can only be plugged into LAN ports instead of WAN ports.

Hope it helps!

The company's big network, the general routing needs to set up a static IP connection, and then clone the MAC address of the company's computer that you can connect to the Internet into the router, and all other devices connected to the router are automatically obtained, and then you can not connect to the computer You look at the update of the network card driver to try.

The router needs to set an account and password through the computer.

The system is poisoned.

You can try to open the computer's control panel - Network & Internet - Network & Sharing Center - change the adapter settings, then double-click on the local connection, in double-click Internet Protocol version 4, both IP and DNS are set to auto-fetch, if you don't have the above selection, you need to open the computer's service, find the DHCP service and enable the service.

Problems with network service providers, remote server failures, you can **consult!

If there is a "cat", restart it!

Go to Device Manager and check if the NIC driver is normal! The network is not working, restart the route, or restart the computer to see.

Is it okay to connect the same network cable to the computer, but not to the router? This one is directly connected to the router, it is to configure the router This one is not connected to the Internet, you wait for it to get the IP address, ping it, to see if it is occupied, sometimes the IP address is occupied by another machine, so it is not connected to the Internet!

You have to set the IP address, otherwise there will be a conflict.

Under the network card driver update, there is still a router set up?

Method steps.

When we can't access the Internet, the first thing we need to observe is the status of the network icon in the lower right corner of the computer screen, which is the most intuitive way for us to judge network problems.

If there is a red cross on the network icon in the lower right corner, we need to further analyze whether it is a problem with the computer itself or an external link.

When the network icon in the lower right corner has a red cross, you first need to observe whether the network cable light behind the host is flashing, such as:

If it is not lit, it can basically be judged that it is an external problem or a network port problem.

If the network cable light is flashing, right-click the network icon in the lower right corner - open the Network and Sharing Center - change the adapter settings, find the local connection to see if it is disabled, and start the local connection if it is disabled.

If the network icon in the lower right corner has a yellow exclamation mark, we need to consider whether the network IP is configured correctly, many companies will have their own intranet, and you need to set the correct ** to go online, the configuration path is to right-click the network icon in the lower right corner - open the network and sharing center - local connection - properties - Internet protocol version 4.

Sometimes we encounter the situation that you can log in to QQ and cannot access the Internet, which is why we have to consider whether the DNS is set correctly, if there is a company intranet, there will be a DNS for the intranet, and if the configuration is wrong, you will not be able to access the Internet.

If none of the above methods can be solved, you may need to be helped by a professional colleague.

If you want to fix the IP, the DNS needs to be specified manually, in the IP address setting page, the DNS server below, if you don't know the DNS address of your company's operator, try this address.

Make sure that the IP is in conflict with someone else. First, check whether other computers are surfing the Internet normally, and contact the network management to change the IP to try.

It's possible that there is a problem with your network, and you can find a motionless solution to deal with it for you.

Feels like an ARP issue. Currently, there are ...... intranet ARP attacks, skulls, DDoS, and oversized ping packetsA series of intranet attacks can cause intranet disconnection, and even attacks like ARP are difficult to detect, and antivirus software can't solve them, and they can't be **. This is also the main reason why the intranet disconnection cannot be solved after the system is reinstalled.

These intranet attacks come from the following network cards, and we only need to block them on the network cards to ensure the stability of the intranet. Network problems have to be solved by the network.

Ethernet has protocol vulnerabilities and is not good at management, which is the technical root cause of frequent network problems. Immunity wall technology is aimed at and solves this problem. Intercept and control directly on the NIC.

Its main features: the technical scope of the immune wall should be extended to the end of the network, to the lowest level of the protocol, to the entrance and exit of the external network, and to the most complete picture of the intranet, which is to hope to fully resist the network virus through the network itself, and at the same time improve the management of the business, so that the network can be controlled, managed, prevented, and considerable.

The Patrol Immunity Wall Network solution can solve this problem at its root. The patrol immunity wall solution does not make major changes to the networking architecture, but a set of software and hardware solutions, which intercept virus attacks directly from the network card, monitor the intranet from time to time, monitor and manage each IP, display the Internet information of each member, display the intercepted virus attack, and monitor and alarm. Information on the intranet is clear at a glance.

Plug the plug back in, disable the network, and then enable it again, if not, manually set the IP address.

I dealt with such a computer a few days ago, so I really can't reinstall it.

First, look at the IP address you obtained. Gateway and see if you can get dns ping gateway, dns can ping means that the line is through (in this case, check the computer software problems) If the ping is not working, it depends on where the ping is going, and whether the IP address obtains a normal IP address. Check if there is a problem with the computer settings, etc.

If you can't go up, you will initialize it, and reset it after you go in. Wired connection, you have to set the IP address, there is a school, and the home is generally the default, none. Therefore, it is necessary to change the IP address to auto-specify.

If it's a company, use the sheriff to look at someone else's address! After changing my own! The premise is to wait for the other party's computer to turn off! Otherwise the address conflicts!

It's a bit of a loss, but you can surf the Internet, bind the IP and MAC address with "P2P Terminator", and then choose to send the address to the illegal IP conflict. Prohibit others from using the Internet. Set user permissions to standard so that they can't change their IP address.

The network administrator has set your computer's IP address to disable!

You'd better ask your company's webmaster.

The cause of the network fault may be both software and hardware, so it is recommended that you troubleshoot it in this way.

First of all, the computer in the next office can be plugged into the switch, then connect his network cable to your computer for testing. If your computer can access the Internet normally at this time, it means that there is a problem with the network connection of your computer to the switch, check the network cable and plug.

If you can't access the Internet stably with the network cable of the office next door, you are sure that it is your computer problem.

It is recommended to uninstall the current NIC driver and install the driver provided by the motherboard's official website to improve stability and compatibility to see if the problem can be solved.

If it is still unstable, it is a hardware fault of the network card, and it can be solved by replacing the network card.

If the network management router and switch have not done anything, there is no special reason, it may be an IP address conflict, try to set a fixed IP to try.

Analyse. 1) Modem failure. Please observe whether the (ADSL or LINK) indicator on the modem is always on, you can turn off the power of the modem for 2-3 minutes before turning on (restarting the modem) and reconnecting the broadband connection.

2) ADSL line failure. In general, the quality of the line is poor: there are many joints, corrosion or the line is too long, etc., which may cause frequent drops

3) It may be caused by the installed anti-virus software or virus firewall defense is too high, you can modify the firewall settings or turn off or exit the anti-return firewall.

Did you get the IP for the small computer in the lower right corner?

If there is, click on it, and then click on the support inside, and you will see your IP and gateway! Let's see if your gateway is there!

And also! You're not going to route! How do you know that the settings are default and there are no limits......

Check if your wireless router has a firewall, the firewall may have disabled your computer to access the Internet, whether your colleagues are more knowledgeable about computers, maybe it's a prank.

Try setting the IP DNS to a fixed one.