First, if you can access QQ, but open the space or other websites can't find the server, there are three possibilities: using a proxy, the DNS server automatically finds something wrong and is infected with a virus (but the probability of being infected with a virus is the smallest).

1. Did you use an agent? If yes, please cancel the agency. If your browser is roaming, please change it as follows: Open roaming browser-Tools-Server-Do not use proxy server.

2. If the proxy has not been used before, it is probably the setting of DNS server. To change it to manual, modify it as follows:

The XP system is as follows: Right-click "Network Neighborhood"-"Properties" on the desktop. Then right-click Local Area Connection-Properties in the window that opens. Find TCP/IP in the pop-up dialog box, click Properties, click "Use the following DNS server address" in the pop-up dialog box, first determine whether you are Netcom or Telecom, then call your local telecom or Netcom's DNS server, add both DNS server addresses, and press OK to see if you can open a web page to browse ~ ~

3 virus, no way, either safe mode antivirus (Kaspersky, 360, NOD32), or redo the system.

Second, if QQ can't get on, please check the router and press the REST key behind the router to see if it works. Then check the network cable, telephone line and reinstall the network card driver.

2. The computer shows that the server cannot be found. What is the reason?

First of all, infected with the virus.

This situation is often manifested in the prompt in the lower left box of IE interface when opening IE: a webpage is being opened, but there is no response for a long time. Check the process in Task Manager to see how the CPU utilization is. If it is 100%, it must be infected with a virus, so it is necessary to check which process greedily occupies CPU resources. When you find it, you'd better write down your name and click Finish. If you can't finish it, you must boot to safe mode to delete it, and you must enter the registry. (Method: Start-Run, enter regedit) In the registry dialog box, click My Computer-Edit to find it, enter the program name, click the right mouse button to delete it after finding it, and then search several times, which can often be completely deleted.

There are many viruses. When antivirus software is powerless, the only way is to delete them manually.

Second, it is related to setting up a proxy server.

Set the proxy server in the browser (Control Panel-Internal Options-Connection-LAN Settings-Use Proxy Server for LAN). Setting a proxy server does not affect QQ networking, because QQ uses 4000 ports, while accessing the Internet uses 80 or 8080 ports. This is why many people don't understand why QQ can be accessed and the webpage can't be opened. Proxy servers are generally unstable, sometimes accessible and sometimes not. If there is such a setting, please cancel the proxy.

Third, the DNS server interprets the error.

The so-called DNS, that is, the domain name server, converts the domain name into an IP address that the computer can recognize. If there is an error in the DNS server, the domain name can't be resolved, so naturally, the Internet can't be accessed.

If this is the case, sometimes it is the problem of the network service provider, that is, the ISP, you can call the ISP. Sometimes the router or network card can't connect to the ISP's DNS service.

You can turn off the router temporarily, or reset the router, or the network card cannot automatically find the DNS server address. You can try to use the specified DNS server address. In the network properties, (Control Panel-Network and Dial-up Connections-Local Area Connection-Right-click Properties-TCP/IP Protocol-Properties-Use the following DNS server address). Different ISPs have different DNS addresses, such as 202.96. 134. 133 (active) 202.96. 128.68 (standby).

Updating the network card driver or replacing the network card is also an idea.

Fourth, IE can't start normally due to the loss of system files.

This phenomenon:

1, the instability of the system is manifested in frequent crashes, frequent inexplicable restarts, and illegal shutdown, resulting in the loss of system files;

2. The conflict between software and hardware is often manifested in the conflict between network card driver and IE caused by installing some programs. Since INTEL introduced the Hyper-Threading CPU, IE6 under XP SP 1 has a prominent problem that it conflicts with Hyper-Threading.

In the first case, you can try to repair the system. Under 2K or XP system, put the original installation CD (note: the original installation CD must be used), enter sfc /scanow in Start-Run, and press enter.

In the second case, you can uninstall the recently installed hardware or programs. For 2K or XP systems, after the machine is started, you can press and hold F8 to enter the startup menu and select "Last Correct Configuration". For XP system, you can also use the recovery function of the system to solve the problem quickly.

If XP system is due to hyper-threading CPU, you can disable hyper-threading in BIOS. In this case, the TT browser attached to QQ can browse normally, so you can try to use it.

3. Why can't the computer find the server?

Several situations can lead to this phenomenon ~: 1. Your network speed is too slow, and the webpage code is not fully downloaded, which leads to incompleteness, which is of course wrong. Please refresh. 2. Web page design error, resulting in some code can not be executed. Please download the latest browser. 3. Your browser is incompatible, so some codes cannot be executed. Please download the latest browser. 4. There is an error in your IE browser cache. Right-click the desktop IE browser and select Properties. On the General page, click the Delete Files button, select Delete All, and then click the Delete cookies button. 5. The website server has too many visits, which leads to the overload of the server and incomplete downloading of some codes, prompting the browser to end, leading to errors. You can refresh it more, or visit it when the internet speed is better (provided that the website is relatively large and there will be no problem 2)~ ~ 6. QQ space is currently being upgraded to 5.0. It is normal to have some minor problems, which will be solved in a few days. Don't worry. It may be that the module address is invalid, and this problem has occurred in mine 1). Open IE browser and select Tools menu-> Internal Options->; ; Advanced tab-> ; Click "Restore Default Settings" and click "OK" to close all IE browser windows; (2) Open IE browser and select "Tools" menu->; "interest option"->; ; "general" tab->; Check the newer version of the stored web page in the temporary file settings of Inter, and select Check every time you visit this page. Click "Delete files" in the temporary file settings of Inter, tick before "Delete all offline contents", and click OK to close the dialog box and close all IE windows; (3) Open IE browser and select "Tools" menu->; "interest option"->; ; "Security" tab, select "Inter" in the "Please make security settings for web page content in different areas (Z)" window, and then select "custom level" to set "Download signed Activex control" and "Run Activex control" in Activex controls and plug-ins to "Enable" or "Prompt". . ,

If it helps you, please remember to adopt it as a satisfactory answer. Thank you! Wish you a happy life! vae.la

4. What's the matter that the computer can't connect to the server?

This situation is the problem of network card and network cable. First of all, check whether the network card is plugged in, whether the indicator light on the back of the network card is on, and whether it flashes. If the light doesn't work, there are several situations: plug it in tightly, unplug the network card and plug it in again; The PCI slot on the motherboard is damaged, try another slot; The network card is damaged. Try a different network card. If the light is on, there is nothing wrong with the motherboard and network card. Check whether the network cable and router or broadband cat are plugged tightly, whether the crystal head is damaged and whether the network cable is damaged. If the router is surfing the Internet, replace the socket at the router end and check whether the network cable is in good condition with the line tester. Check whether the broadband cat is powered on. If there is no problem above, please ask customer service to check whether the broadband cat is damaged or not, and whether there is a problem with the broadband server settings.

Whether you can surf the internet is just an icon in the lower right corner. If you can't surf the Internet, check whether there is a small computer monitor icon in the lower right corner with a red * 636f7079E79Fa5E98193313337623433. If yes, check whether the network cable is connected correctly, whether the network card is loose and pulled out, and whether the network card driver is installed correctly. If so, right-click Online Neighborhood on the desktop, click Properties, right-click Local Connection in the pop-up window, click Properties, and then double-click Inter Protocol (TPC/IP) in the window that appears, and choose to use the following IP address. Fill in the IP address in the following format: IP address 192. 168. 1. * subnet mask 255.255.0 gateway 192. 1. 1, where * can be filled in 2-255.0.

If you use a router to surf the Internet, the gateway should fill in the corresponding numbers according to the address of the router, and the following DNS should be filled in according to the address of the local DNS server. Click OK after filling it out, wait a few seconds, open IE browser and see if you can surf the Internet. If you still can't get online, call the customer service phone of the local broadband service provider to see if there is any problem with their server settings. Then there is the ability to surf the internet, and there is an icon with a yellow exclamation mark in the lower right corner. This icon appears because you didn't fill in the IP address of this machine. Just fill it in as mentioned above.

5. What if the computer doesn't have a network?

If the computer broadband can't get online, you can use the following methods to troubleshoot:

1, router problem:

(1) Check whether the router light is normal. If it is a light cat, all the lights are on except the LOS light. You can turn off the router and cat power and turn it on after 5 minutes.

(2) If the light cat lamp is abnormal, check whether there is any problem with the light cat optical interface, and whether the indoor tail fiber is connected to the light cat connector is loose, and it can be restored after plugging in the connector; Some indoor optical fibers are too bent. Excessive bending of optical fiber will affect the total reflection transmission of optical signals in optical fiber, as long as the optical fiber is straightened; Some outdoor optical fibers are broken or the optical port of equipment in the computer room is faulty, so it is necessary to contact the staff to eliminate the fault.

2, computer system configuration problems:

(1) Reset the network: Press WIN+R on the desktop to enter CMD, and click OK to open the command prompt window. Press win+X to open the command prompt directly, and enter: shwinsockerreset at the command prompt. There will be a success prompt later: Winsock directory successfully reset/restart the computer to complete the reset.

(2) Identification of IP address and DNS: Open the control panel of the computer, click the network connection, select local connection, right-click the local connection icon, select properties, double-click Inter Protocol (TCP/IP) in the general tab, select the following IP address, and fill in "192" in the IP address. It should be noted that IP must be in the same network segment as the IP address of the modem. If it is a wireless network, you can click the network icon in the desktop taskbar, open the network and * * * sharing center, click Local Connection, click Properties, and double-click IPV4 to set the automatic acquisition of IP address and DNS. If you still can't surf the Internet normally after self-help troubleshooting, it is suggested that you can contact local manual customer service for repair.

6. What happened when the computer couldn't connect to the server?

This problem occurred in my computer. I reinstalled the system, but it still happened later. I'll tell you two possibilities

First: computer poisoning; Solution: Antivirus or reinstall the system.

Second: the DNS server address cannot be automatically configured or configured incorrectly. If you can surf the internet directly with the address, it is more likely. Operation method: enter "202. 103.69.205" in IE browser. If you can visit the website, this is the second reason I said.

Solution: Set the DNS server address manually. Setting method: right-click My Network Neighborhood-Properties-Double-click-Internet Protocol-Use the following DNS server address. If not, it is recommended to reinstall the system, and then set the DNS server address manually.

7. The computer cannot find the source of the specified server.

Website failure: When you find that other websites can be opened, but this website can't be opened, it may be because the domain name server fails or the website link is deleted, or the line of the network server is accidentally blocked, resulting in users in a small number of areas unable to link.

Solution: This question is mainly about the website you want to visit. At this time, we will refresh the web page and wait for a while. Virus intrusion: the virus in the computer may be hijacked by dns, for example, some homepages are passively or actively tampered with, resulting in some webpages not being opened or jumping to other websites.

Solution: Use the genuine antivirus software downloaded from the computer to scan the computer comprehensively to see if there is any virus. If there is no virus, you can still open the webpage after antivirus, which is probably caused by a virus. Network failure: Network failure is a common cause of DNS errors. For example, we often get this prompt because there is no internet when browsing the web.

Solution: Check whether the network is down. I hope my answer can help you.

8. When the computer opens the webpage, it always shows that the server cannot be found. What's the matter?

Problems with IE browser itself When IE browser itself fails, it will naturally affect browsing; Or IE is maliciously modified and destroyed, which will also lead to the inability to browse the web.

At this time, you can try to repair it with IE repair, or reinstall IE. The virus infects the application layer gateway service of XP system, which makes the webpage unable to open. Solution: If you can only access QQ, you can't open the webpage. Just restart.

However, even if you restart, you can't open a webpage after opening 7 to 8 webpages, so you can only go to QQ. Sometimes telecommunications will let you disable the application management service, and it will be solved.

This is because an unknown virus infects the application layer gateway service of XP system, which makes XP system users unable to open web pages. After virus infection, the service will start automatically every time the system is started, and a alg.exe process will be generated in the background. As long as the application layer gateway service is turned off manually, this problem can be solved: click the control panel-click the management tools-double-click the service icon-double-click the second application layer gateway service item-select Disable in the startup type-click Apply-click Stop-click OK-restart the operating system. Broadband problem ADSL broadband, some web pages can not be opened. Click "Run" in the start menu and enter "regedit" to enter the registry.

Expand {HKEY _ locat _ machine \ system \ currentcontrolset \ services \ classtrans} in turn, and you will see several subitems containing 000X, looking for a 000X primary key with the key name of "DriverDesc" and the key value of "TCP/IP", which contains the network attribute settings of the computer. Such as IP address 192. 168.0.XX, gateway192.168.0.1,subnet mask 255.255.255.0, etc. Under this item, create a new "DWORD Value" and name it "MaxMtu", and change the key value to decimal 1450. After the setting is completed, restart the computer, and the client can visit the site that was previously inaccessible.

Inappropriate network settings make it impossible to open the webpage. It is common to specify the networking mode of IP, gateway and DNS server manually, and to use proxy servers to access the Internet without setting IP when using routing. Carefully check the computer's network settings, different settings in different situations.

In addition, the error of network protocol and network card driver will also cause IE to be unable to browse, which may be caused by the damage of network protocol (especially TCP/IP protocol) or network card driver. You can try to change the network card driver and network protocol again. DNS server problem when IE can't browse the web page, you can try to access it with IP address first. If it is accessible, it should be a DNS problem. The DNS problem may be an error in obtaining DNS when networking, or it may be a problem of the DNS server itself. At this time, you can manually specify the DNS service (the address can be the DNS server address provided by the local ISP, or you can use the DNS server address that can be used normally in other places. )

In the network properties, (Control Panel-Network and Dial-up Connections-Local Area Connection-Right-click Properties-TCP/IP Protocol-Properties-Use the following DNS server address). Different ISPs have different DNS addresses.

Sometimes the router or network card can't connect to the ISP's DNS service. In this case, you can turn off the router temporarily or reset the router. Another possibility is that there is a problem with the local DNS cache.

In order to improve the speed of website access, the system will automatically store the websites that have visited and obtained IP addresses in the local DNS cache. Once you visit the website again, the IP address of the website will be taken directly from the local DNS cache for access without going through the DNS server. Therefore, if there is a problem with the local DNS cache, the website will be inaccessible.

You can execute ipconfig /flushdns in Run to rebuild the local dns cache. Set up your own DNS202.96.64.68202.96.75.68 network firewall. The network firewall is not set properly, and the webpage cannot be opened. If the network firewall is not set properly, such as the security level is too high, IE is accidentally put into the blocked access list, and the firewall policy is wrong. You can try to check the policy, lower the security level of the firewall or close it directly to see if it is back to normal.

System file error System file error Unable to open the webpage. When the system files related to IE are replaced or damaged, it will affect the normal use of IE. At this point, you can use the SFC command to repair it. WIN98 system can execute SFC in "run" and then scan. WIN2000/XP/2003 tried to fix it by executing sfc /scannow in Run. Among them, when only IE can't browse the web, but QQ can, it is often caused by the damage or loss of files such as winsock.dll, wsock32.dll or wsock.vxd(VXD only exists in WIN9X system). Winsock is an important part of TCP/IP protocol, which generally needs to be reinstalled.

However, xp began to integrate TCP/IP protocol, and it can't be simply uninstalled and reinstalled like 98. You can use the sh command to reset the TCP/IP protocol and restore it to the state when you first installed the operating system. Specific operation: Click "Start Running", enter the command "CMD" in the running dialog box, and a command prompt window will pop up. Then enter the command "sh int ip reset c:resetlog.txt" and press enter, where the "resetlog.txt" file is a log file used to record the execution result of the command, and this parameter option must be specified. The full path of the log file specified here is c: resetlog.txt.

The result of executing this command is the same as that of deleting and reinstalling the TCP/IP protocol. Sh command is a scripting tool based on the command line. You can use this command to configure and monitor Windows systems. In addition, it provides an interactive network shell interface. For the format of using the sh command, please refer to the help file (enter "sh/?" In the prompt window)) Problems with the HOSTS file If the HOSTS file is modified, it will also lead to abnormal browsing. The solution, of course, is to empty the contents of the HOSTS file.

Nine, can't open the secondary link. The four solutions are to open the homepage of the website, but not the secondary link. Method 1: Re-register the following DLL files. You don't have to lose the second command first.

9. What if the computer often can't connect to the server?

You can check the firewall.

The reasons why computers often can't connect to the server and the solutions are as follows:

1. Fault symptom: MODEN has no dial tone, and has been unable to connect to the Internet, and the indicator light on MODEN does not flash.

Solution: Whether the telephone line is busy; Whether the connection (including connection and connector) of the server connected to MODEN is normal; Whether the telephone line is normal and whether there is noise interference; Whether the dial-up network configuration is correct; Whether the configuration setting of MODEN is correct, and check whether the audio or pulse mode of dial tone is normal.

2. Failure phenomenon: surfing the Internet can be normal, but it is always intermittent.

Solution: telephone line problem, poor line quality; The modem is not working properly, which affects the stability of surfing the Internet.

3. Fault symptom: A prompt box of "Error 678" or "Error 650" appears on the computer screen.

Solution: Generally, the server line you dialed is busy and busy, so it can't be connected temporarily. You can continue to redial later.

4. Fault phenomenon: "The computer you dialed is not answering" appears on the computer screen. Try again later "prompt box.

Solution: The telephone system is out of order or the line is busy. Dial later.