Why does my computer connect to the Internet and disconnect from the Internet?

Can't get on the Internet:

Hope it helps:

1. Problems with the computer itself, network card problems, driver drops, or network cable problems, routers, etc., which cause you to be unable to access the Internet, eliminate them one by one.

Second, the virus in the computer, IE is maliciously modified, IE error, etc., can be disinfected, and repaired with Huangshan IE repair.

3. If the packet is lost, there may be a problem with the crystal head, redo the crystal head.

Fourth, if DHCP is not enabled for routing, the IP address cannot be obtained, the network is restricted, or someone in the same network uses an executive officer to cause interference.

6. QQ and other instant messaging software can be logged in, or you don't open the web page, it may be that the DNS is not set up, please set it according to the public DNS address where the local area is located.

7. If you cannot access the Internet due to system damage, please reinstall or restore the system.

9. Router, if the cat is overheated, please turn off the power for 15 minutes and then turn it back on.

The solution to frequent broadband drops is as follows:

1. If you use a router, disconnect the router for stand-alone dial-up test;

2. If you have a modem device, please pay attention to whether the device is overheated, and it is recommended to turn it off for a few minutes before restarting it.

3. If the connection is dropped when running the program alone (such as when playing games), it is recommended to restart the computer or reinstall the program;

4. Check whether the disconnection is caused by computer virus, and it is recommended to scan the whole disk;

5. If there is a server option for the running program, please select China Unicom.

If the above methods still cannot solve the problem of disconnection, you can contact the local manual customer service for feedback.

1.Troubleshoot issues with the network cable or the contact between the plug and the connection.

2.It may be a voltage problem that causes the broadband cat to restart and cause the connection to drop, find a multimeter to test the voltage to see if it is normal;

3.Excluding the above two reasons, it may be caused by the incompatibility between the speed configuration of your computer network card and the Ethernet port of the up-connected device, you can try to change it as follows: right-click network neighbor Attribute Right-click local connection attribute General configuration Advanced connection speed and duplex mode, change the original "adaptive" to "10m full-duplex" can generally be solved.

Maybe it's the network itself! I don't know what network you use, is it telecom, or is it mobile Unicom or something like that?

Hello dear, I am happy to answer for you: the reasons are as follows: 1. It may be a voltage problem that causes the broadband cat to restart and cause the connection to drop, find a multimeter to test the voltage to see if it is normal; 2. Check whether the status of the broadband cat is normal when the connection is dropped, there is a DSL or whether the link light is always on, the DSL or Link light on the broadband cat indicates the communication status between your broadband cat and the operator's equipment room, it should be always on at normal times, if it is not bright or shiny, the biggest possibility is that there is a problem with the line, and directly call the operator's customer service to report the obstacle for people to check and repair.

Extended Information: Troubleshooting Network Cable Faults1For most broadband users, the network layout of ADSL broadband interface wireless router is the most common, and when the connection is dropped, the first thing we need to consider is the line problem.

2.Due to the fact that the first line is too long, there are too many connectors, or there are some interference sources, it is likely to cause the line to drop, and the network cable that is inferior and does not meet the standard often causes network instability, so when you find that the line is dropped, you must first check whether the network cable interface is loose. 3.

If you find that the network cable interface is intact, you should check the problem with the power signal light. If the power signal light is not on, the first thing to check is the power supply. For example, whether the connection is disconnected due to the unstable power supply of the mains, whether there is a problem with the power supply of ADSLMODEM itself, etc.

4.Touching the ADSLMODEM shell with your hands, it feels very hot, at this time, you may wish to temporarily turn off the ADSLMODEM until it cools down before turning it on, or place it in a more ventilated position, which can also eliminate the disconnection fault.

The network is unstable, try another network.

If you have a local area network, you should be attacked by ARP, so it is recommended that you install a firewall and scan it completely.

If you are not on the local area network, there may be a network problem, complain about telecommunications.

Contact your ADSL broadband operator directly. There could be a line problem!

It's not your fault, it's telecom or (Netcom), call ** to find telecom or (Netcom) and ask them to fix it.

It could be a problem with your router, or the network cable is not connected correctly.

Specific method: First of all, you should check whether there is a problem with the network cable, first check whether the connection between the network cable and the chassis is loose, and then see if the network cable is damaged, such as the network cable is aging or has been bitten by mice.

After making sure that there is no problem with the network cable, go back to the computer desktop and find the "computer" (take win7 as an example, if you are an XP computer user, select "My computer") icon, and then right-click and select the "manage" option.

Once the "Manage" window is opened, we click on the "Device Manager" option from the list below.

Once you have opened the options, then find the "Network Adapters" option and turn it on.

Select the network card we use from the drop-down table opened by the "Network Adapter" option, and finally right-click on the properties, click "Advanced" navigation in the pop-up interface, and select "Connection Speed and Duplex Mode" in the property list below, and then select "10Mbps half-duplex" in the "Value" there.

Restart the computer and turn it on to see if the network will still be disconnected.

1: First of all, you should check whether there is a problem with the network cable, first check whether the connection between the network cable and the chassis is loose, and then see if the network cable is damaged, such as the aging of the network cable or the bite of a mouse.

2: After making sure that there is no problem with the network cable, return to the computer desktop and find the "computer" (take win7 as an example, if it is an XP computer user, select "My computer") icon, and then right-click and select the "manage" option.

Three: After opening the "Manage" window, we click on the "Device Manager" option from the list below.

Four: After opening the option, then find the "Network Adapter" option and turn it on.

Five: Select the network card we use from the drop-down table opened by the "Network Adapter" option, and finally right-click on the properties, click on the "Advanced" navigation in the pop-up interface, and select "Connection Speed and Duplex Mode" in the attribute list below, and then select "10Mbps half-duplex" in the "Value" there.

Six: Restart the computer and turn it on to see if the network will be disconnected.