Recently, I found that many netizens can chat on QQ instead of browsing the web. Indeed, too many people ask questions. In order to solve your doubts, I collected some information and discussed with you how to eliminate this fault. (Pour a cup of tea first) Of course, I just want to analyze the common problems with you, and the specific situation needs specific analysis. You can refer to several situations and take corresponding measures, hoping to bring you help.
1. The browser "Connect" option is set incorrectly.
Solution: Set the Internet access type correctly. If surfing the Internet through proxy service, please fill in the IP address and port number of proxy server correctly; If not, please do not check the "through proxy server" option.
2.DNS server settings are incorrect.
Solution: If your ISP has assigned you a fixed IP address, please fill in the IP address and DNS server address provided by your ISP correctly; If the ISP provider assigns a dynamic IP address, you do not need to fill in the DNS server address; Another possibility is that the DNS server of the ISP provider failed to correctly convert the domain name into an IP address. At this point, you can type the IP address of the website in the address bar of the browser to browse the webpage.
3. The firewall settings are incorrect
Solution: If the firewall is not set properly, it may block the information exchange with the external network, resulting in the inability to browse the webpage. We can modify the firewall settings. What, how to modify it? I don't need to say this. Well, by the way, if you don't know, just choose the default level, just choose "medium".
Case 2: ADSL can log in successfully, but can't browse the web.
First, you should PING the ISP's DNS server address to see if you can PING ISP. If you can PING, it is mostly a software problem. If you can't ping, you should check the connection status and communication protocol (TCP/IP) of hardware devices/lines.
If you can PING, you can see information similar to the following:
Command: PINGA. Fourth century BC
Reply to Rome. b . c . d:bytes = 32 time = 14 msttl = 250
Reply to Rome. B.C.D:bytes=32time=27msTTL=250
Reply to Rome. B.C.D:bytes=32time=20msTTL=250
Reply to Rome. b . c . d:bytes = 32 time = 17m sttl = 250
If you cannot PING, you will receive the following message:
PingingA。 B. c. dwith 32 bytes of data:
overrun the time
overrun the time
overrun the time
overrun the time
1. Friends with more than one computer can change one computer. Don't install any proxy server software or any firewall on the replaced computer, just install a network card to directly connect with ADSLMODEM. After installing ADSL dialing software correctly. See if you can browse normally. If so, the fault is caused by the client's computer. If not, you need to check whether the modem and line are normal.
2. Friends with only one computer can stop running all proxy server software, such as WINGATE, SYGATE and INTERNET access (ICS) of WINDOWS, and log in directly to see if the fault can be eliminated. If the fault is eliminated after stopping running the proxy server software, it must be a problem with the proxy service software.
3. Check the browser settings, especially IE. For example, the most common failure to browse the web is to select "automatic detection settings" in IE. Remember, never select this option. If it is IE5X version, click Tools-Intranet Options-Connection-LAN Settings to see this option. If this option is ticked in front, you must cancel it. The fault can be solved after cancellation.
4. Check whether the attribute settings of TCP/IP protocol, especially DNS server settings are correct. In particular, the location of setting DNS varies with different dial-up software, some are set in the connection icon attribute of dial-up network, some are set in the control panel network, and some are set in the connection profile attribute of dial-up software (such as ENTERNET300). These three places must be set correctly.
5. Friends who use WINDOWS can prepare ADSL dial-up software and WINDOWS system CD-ROM, then delete the dial-up software first, then delete all TCP/IP protocols in the control panel/network, restart the computer, add TCP/IP protocols again, turn on the modem power, and reinstall the dial-up software. After testing, if the settings are correct, most of them can solve the problem that after reinstalling the dial-up software and TCP/IP, they can dial-up but cannot browse the web.
6. Replace a browser software such as Netscape's Netscape browser browsing test.
7. If you have two network cards installed in the computer directly connected to the ADSLMODEM, please try to pick up the network card connected to the LAN first, leaving only the network card connected to the ADSLMODEM. Then see if the fault is eliminated. If troubleshooting, you should check the configuration of network and system resources. Especially to see if there is any conflict between the network card and other devices (WINDOWS users can check whether the devices are normal in the control panel/system/device management).
8. Your network card has BOOTROM chip boot function enabled, and the network card has PXE boot chip. It can be solved as follows:
① If the network card is integrated on the motherboard, or the online boot program is written into the BIOS, the boot sequence of the system can be modified from the BIOS settings, such as setting the hard disk to boot first, or prohibiting the network card from booting the system from the BIOS.
(2) If there is no integrated network card, you can unplug the boot chip on the network card or set the program with the network card, and the BootROM boot function of the network card can also be turned off. Then, when "press shift-f 10 to configure ..." appears, immediately press the key combination of "Shift+F 10" to enter the menu, and set Bootorderrom to be disabled from the fourth line.
Situation 3: * * likes surfing the internet, but can't browse the web.
After using WindowsXP machine as proxy server, it is found that other computers in the local area network can't browse web pages, but there are data streams, QQ and other software can also be used, and all machines in the network can also access each other. The proxy server is a dual network card, which is set as "other computers in the network access the Internet through this computer" in the network configuration wizard (connecting to the LAN through the A network card) and "* * * enjoy the B connection in the network" in the * * * sharing attribute (that is, the second card is the B network card). The client is set to "surf the Internet through other computers in the network", the operating system is Windows98/2000/XP, and it is connected through a switch. An indicator light connected to the proxy server's switch works normally (A, B network card and broadband modem connection), but the indicator light on the client only lights up occasionally. When you open a webpage, you can see "Opening * * * webpage" in the status bar, but you can't see the webpage for a long time. Finally, the prompt "Web page cannot be displayed" is displayed.
Solution: There may be a problem with your network cable connection and DNS settings:
① Make a cascade line, connect the A network card directly to the broadband ADSL, and the others will not move.
② Set the IP addresses of other clients to 192. 168.0.2, 192. 168.0.3,192.168.0.0. .................................................................................
At the same time, we can also consider whether there is a conflict between the proxy server and the network card. Replacing the PCI slot and temporarily removing unnecessary peripherals can also help solve the problem.
Common ADSL disconnection phenomenon
The webpage cannot be opened, the download is interrupted, or the online video and audio stream is interrupted. These are the troubles that many people who use ADSL to surf the Internet will encounter. However, when you carefully check the status of ADSLMODEM, you will find that the dial-up login has been successful. So what's the problem?
1. The line is unstable.
If the residence is too far away from the telecommunications bureau (more than 5 kilometers), you can declare it to the telecommunications department. Make sure the line is connected correctly (different voice separators have different connection methods, please follow the instructions to connect correctly). At the same time, the communication quality of the line is guaranteed to be good, free from interference, and there is no connection to other equipment that will cause line interference, such as telephone extensions and fax machines. And check whether the junction box is in poor contact with the crystal head and whether it is entangled with other wires. If possible, it is best to use a standard telephone line, and it is better if it is a class III, class V or super-class V twisted pair conforming to ITU International Telecommunication Union standards. The telephone lines leave separately after entering the room. One line is a telephone and the other line is a computer. If you want to install telephone extensions in all the rooms where you live, you'd better choose a junction box with good quality. The PC is connected to the twisted pair connected with ADSLModem. (Note: The mobile phone must not be placed next to the ADSLModem, because the mobile phone will automatically search the network every few minutes, and the strong electromagnetic interference is enough to cause the ADSLModem to disconnect. )
2. Check your network card. If it's an ISA network card, it's better to switch to PCI and choose a good quality network card. Too cheap network cards may be the culprit. You can use 10M or 10M/ 100M adaptive network card. In addition, the conflict caused by dual network cards is also worthy of attention. At this time, you should unplug the network card connected to the LAN or other computers, and only use the network card connected to ADSL for online testing. If the fault returns to normal, check whether there is any conflict between the two network cards.
3.ADSLModem or network card is not set correctly.
The most common thing is to set the wrong IP address of ADSLModem or set the wrong DNS server. Because for ADSL virtual dial-up users, there is no need to set an IP address, which can be automatically allocated. TCP/IP gateway generally does not need to be set. In addition, if the DNS settings are correct, if the operating system is Windows9x, type Winipcfg in the DOS window to get the DNS address, type ipconfig/renew in Windows2000/XP, or ask the local telecommunications department.
In addition, TCP/IP settings are most likely to cause the situation that web pages cannot be browsed. For example, you can always browse normally without changing the settings. If you suddenly find abnormal browsing, you can try to delete the TCP/IP protocol and add it again.
4.ADSLModem synchronization is abnormal
Check whether your telephone line and ADSL connection are in poor contact, or there is something wrong with the telephone line. If you suspect that the splitter or ADSLModem is damaged, please try to connect the external line directly to the ADSLModem without using the splitter. If it is determined that there is no problem with the separator, it is necessary to ensure that the connection between the separator and ADSLModem cannot be too long, otherwise synchronization will be difficult. If the above situation is ruled out, the synchronization problem can be solved by restarting ADSLModem.
5. Dialing software interferes with each other
There are two ways for ADSL to access the Internet: virtual dialing and private line access. At present, ADSL of individual users mostly adopts the former. And PPPoE (Point-to-Point Ethernet Protocol) virtual dialing software has its own advantages and disadvantages. After many tests of different operating systems, if the operating system is WindowsXP, it is recommended to use your own PPPOE dialing software, which has less disconnection and relatively improved stability. If you are using WindowsME or 9x, you can use the following virtual dialing software-Enternet, WinPoET and RasPPPoE. EnterNet is commonly used now, and EnterNet300 is suitable for Windows9x；. EnterNet500 is suitable for Windows2000/XP. When you have problems with a PPPOE dialing software, you might as well uninstall this software and replace it with a PPPOE dialing software. Please be careful not to install multiple PPPOE software at the same time to avoid conflicts.
6. Other software conflicts
Uninstall software that may cause disconnection. Now it is found that some software, such as QQ2000b, will occasionally cause network disconnection, and the specific situation will cause it, which needs further testing. Many netizens found that the problem of disconnection after uninstallation was solved, including users who used ordinary Modem 163 dial-up internet access. I also received an email from a friend saying that the problem of disconnection was solved after uninstalling QQ, so if you have QQ, you might as well uninstall your OICQ first, and then try to surf the Internet. When you find that when you open some software, it will disconnect, and when you close the software, everything will be fine. Try to uninstall the software.
7. Virus attacks and incorrect firewall software settings
Although it is less likely to be attacked by hackers and viruses, it does not rule out the possibility. If the virus destroys ADSL related components, the network will be disconnected. It is suggested to install a "Skynet Firewall" or a "Kingsoft Netdart" network firewall, which can monitor the communication between your computer and the network in real time, give an early warning of inexplicable network access methods, and effectively reduce the risk of being attacked. If it can be confirmed that the network is still disconnected due to virus damage and attack, it is necessary to check the installed firewall, * * * * proxy server software, Internet acceleration software, etc. After stopping running this kind of software, test it online to see if the speed returns to normal.