I remember before the computer knowledge Daquan introduced to everyone win7 local connection ip settings if you do not know how to set up ip address friends can look at. This article takes everyone to explain how to fix a WIN7 local connection without a valid IP configuration.
can often encounter computer can not access the situation, a situation I think we all do not want to encounter. The computer can't go online, what should we do? The author summarizes his own experience as follows:
First, the problem of network settings
This reason is more likely to be manually specified IP, gateway, DNS server networking mode And use a proxy server to surf the Internet. Double check your computer's network settings.
Second, the problem of the DNS server
When IE can not browse the web, you can first try to use the IP address to access, if you can access, then it should be a DNS problem, causing DNS problems may be obtained when connecting to the network DNS Error or DNS server itself, then you can manually specify the DNS service (address can be the DNS server address provided by your local ISP, or you can use the DNS server address elsewhere). In the network properties, (control Panel — network and dial-up connection — local connection & mdash; right-click attribute — TCP/IP protocol — attribute — use the following DNS server address). Different ISPs have different DNS addresses. Sometimes it is a router or network card problem, and can't connect with the ISP's DNS service. In this case, you can turn the router off for a while or reset the router.
There is also a possibility 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 website that has accessed and obtained the IP address into the local DNS cache. Once the website is accessed again, the website will be taken out from the local DNS cache without going through the DNS server. The IP address is accessed. Therefore, if there is a problem with the local DNS cache, the website will be inaccessible. You can rebuild the local DNS cache by executing ipconfig/flushdns in "Run".
Third, the problem of the IE browser itself
When the IE browser itself fails, it will naturally affect the browsing; or IE is maliciously modified and destroyed will also lead to the inability to browse the web. At this time, you can try to repair it with “ Kingsoft Internet Security Assistant.
Fourth, the problem of network firewall
If the network firewall is not set properly, such as the security level is too high, accidentally put IE into the block access list, wrong firewall policy, etc., you can try to check the policy, reduce the firewall security level Or turn it off directly and try to get back to normal.
Five, network protocol and network card driver problems
IE can not browse, it may be caused by network protocol (especially TCP /IP protocol) or network card driver damage, you can try to re-network card driver and network protocol.
Six, HOSTS file problems
HOSTS file is modified, it will also lead to browsing is not normal, the solution is of course to empty the contents of the HOSTS file.
Seven, system file problems
When the system files related to IE are replaced or damaged, it will affect the normal use of IE, then you can use the SFC command to fix it, WIN98 system can be "running" Execute SFC and then perform a scan; WIN2000/XP/2003 executes sfc/scannow to try to fix it in "Run" When only IE can't browse the webpage, and QQ can be on, it is often caused by file corruption or loss of winsock.dll, wsock32.dll or wsock.vxd (VXD only exists under WIN9X system), Winsock is composed of TCP/IP. An important part of the protocol is to reinstall the TCP/IP protocol. However, xp began to integrate TCP/IP protocol, so it can't be reinstalled as simple as 98. You can use the netsh command to reset the TCP/IP protocol to restore it to the state when the operating system was first installed. The specific operation is as follows:
Click “Start Run”, enter the “CMD” command in the run dialog box, pop up the command prompt window, and then enter the “netshintipresetc:resetlog.txt” command and press Enter. The "resetlog.txt" file is a log file used to record the execution result of the command. The parameter option must be specified. The full path of the log file specified here is "c:resetlog.txt". The result of executing this command has the same effect as deleting and reinstalling the TCP/IP protocol.
Tip: The netsh command is a command-line based scripting tool that you can use to configure and monitor Windows systems. It also provides an interactive network shell interface. See the help file for the format of the netsh command. (Enter "ldsh;netsh/?” in the prompt window".
The second solution is to repair the above files, WIN9X uses SFC to re-extract the above files, WIN2000/XP/2003 uses sfc/scannow command to repair files, when using sfc/scannow can not be repaired, you can try to publish online special WinSockFix is a fix for this problem.
Eight, ApplicationManagement service problem
appears only on the QQ can not open the web page, just restart after the game. However, even if you restart, you can't open the webpage after 7 to 8 webpages, you can only go to QQ. Sometimes telecommunications often let you disable the ApplicationManagement service, which can be solved. The specific reasons are unknown.
Nine, infected with the virus
This situation is often manifested in the IE interface in the lower left box prompts: is opening the web page, but did not respond for a long time. View the process in the task manager, (enter the method, put the mouse on the taskbar, right click — task manager & mdash; process) to see how the CPU occupancy rate, if it is 100%, you can be sure, it is infected Virus, then you want to run other programs is simply a crime. This is to check which process greedily occupies the CPU resources. After finding it, it is best to record the name, and then click the end, if it can not end, you must start to delete the Dongdong in safe mode, and also enter the registration In the table, (method: start — run, type regedit) in the registry dialog, click Edit — find, enter the name of the program, find it, click the right mouse button to delete, and then search several times, often Remove completely.
10. There is also a phenomenon that needs special attention: it can open the homepage of the website, but it cannot open the secondary link. If so, the method of processing is to re-register the following DLL file:
at the beginning — In the run, type:
regsvr32Shdocvw.dll
regsvr32Shell32.dll (note this command, don't lose first)
regsvr32Oleaut32.dll
regsvr32Actxprxy.dll
regsvr32Mshtml.dll
regsvr32Urlmon.dll< Br>regsvr32Msjava.dll
regsvr32Browseui.dll
Note: For each entry, press Enter. The second command can be used without first losing. After you finish these commands, restart Windows. If it is found to be invalid, re-enter it again. Enter the second command this time.