Many computer forums, common to many cylinders ask: My computer can go to QQ, the network connection should be normal, but why can't I access the Internet. I have this problem, and combine my own practice, summarizing the following:
First, infecting the virus
This situation often manifests when opening IE, in the left box of IE interface: I am open, but I haven't responded for half a day. View the process in the task manager, (enter the method, put the mouse on the taskbar, press the right click - Task Manager - Process) Take a look at how the CPU's usage is, if it is 100%, it can be affirmed, it is infected with viruses, At this time, you want to run other programs. This is to be checked which process greedily occupies the CPU resource. After found, it is best to record the name, then click the end, if you can't end, you have to start the stuff to delete the stuff, and go to the registry, (Method: Start - run, enter regedit) In the table dialog box, click Edit - Find, enter that program name, find it, right-click delete, then make several searches, often removing clean.
There are a lot of viruses, when the anti-virus software is in powerless, the only way is to manually delete.
Second, related to setting a proxy server
Some cylinders, for some aspects, set the proxy server in the browser (Control Panel - Internet Options - Connection - LAN Settings - For the LAN Using Proxy Server), the Setup Proxy Server does not affect QQ network, because QQ Use 4000 ports, and access to the Internet is 80 or 8080 ports. This is the reason why a lot of packages do not understand why QQ can be on, and the web page cannot be opened. The proxy server is generally not very stable, sometimes Hou Can, sometimes can't be on. If so, please cancel the agent.
Third, the DNS server explains an error
The so-called DNS, ie domain name server, converts domain names into computer-recognized IP addresses, such as Shenzhen window (www.sz.net.cn) corresponding IP address is 219.133.46.54, Shenzhen hotline (WWW .szonline.net) The corresponding IP address is 202.96.154.6. If the DNS server is wrong, the domain name cannot be interpreted, naturally cannot be online.
If this is the case, sometimes it is a problem with the network service accesser, which can be called ISP; sometimes the router or network card problem, cannot be connected to the ISP DNS service. In this case, the router will be turned off again, or the router is reset. Or the NIC cannot automatically search for DNS server addresses, you can try to use the specified DNS server address. Perform in the properties of the network, (Control Panel - Network and Coaching - Local Connection - Right click Properties - TCP / IP Protocol - Properties - Use the following DNS server address). Different ISPs have different DNS addresses, such as telecommunications is commonly used 202.96.134.133 (main) 202.96.128.68 (standby).
Updating the network card driver or replacing the NIC is also a thinking.
Fourth, system file loss caused IE to start normally
This phenomenon is quite common, due to:
1. The instability of the system is frequently crash, often inexplicably restarted, illegally shutting down causes system file loss;
2. The conflict of hardware and software is often manifested as a conflict with some programs that cause network driver or conflicts with IE. Since Intel launched a hyper-throwing CPU, there is a prominent problem that IE6 and ultra-threaded conflicts under XP SP1; 3, the virus invading causes damage or loss of system files.
If it is the first case, try the repair system, 2K or XP system, put it into the original installation CD (Note: Be sure to install the disc), start - running SFC / Scanow, press Enter. 98 The system can also check with the SFC command.
If it is the second case, the recently installed hardware or program uninstalled, 2K or XP system can be started after the machine, long press F8, enter the startup menu, select "The last correct configuration", if it is an XP system, You can usually solve problems quickly using the system's restore function.
If it is the reason why the XP system is ultra-threaded CPU, you can disable hyperthreading in the BIOS, or upgrade to SP2. (Of course, how XP upgrades SP2 involves a lot of knowledge and payables, which is limited to the space for details. In this case, the TT browser from QQ can be browsed normally and can be used.
If it is a third case, a comprehensive killing virus is performed on the system disc.
There is also a phenomenon that you need to pay special attention: it is to open the home page of the website, but you can't open the secondary link. If so, the process is to re-register the following DLL file:
Enter: Enter:
Regsvr32 shdocvw.dll
Regsvr32 shell32.dll (pay attention to this command, no need to lose)
Regsvr32 oleaut32.dll
Regsvr32 actxprxy.dll
Regsvr32 mshtml.dll
Regsvr32 urlmon.dll
Regsvr32 msjava.dll
Regsvr32 browseui.dll
Note: Each input is entered, press Enter. The second command can do not use it, restart Windows after entering these commands, if it is found, re-enter it again, this time the second command is entered. Also, if it is a 98 system, download this file on Microsoft's website may be simpler, this file's download address is:
Http://download.microsoft.com/download/msn...us/mcrepair.exe
Five, IE is damaged
If the above method does not work, it is possible that it is the kernel damage of IE. Although the system is repaired, it will not be able to make up, so reloading IE is the best way.
If it is a 98 or 2K system, the version of IE is 5.0, it is recommended to upgrade to 6.0.
98 The system has been upgraded to install 6.0, then click Add / Remove Programs in the Control Panel, a fix dialog will pop up, select the default fix, restart.
If it is 2K IE6.0 or XP (own IE is 6.0), the re-IE is a bit trouble, there are two ways:
1. Open the registry, expand HKEY_LOCAL_MACHINE / SOFTWARE / Microsoft / Active Setup / Installed Components / {89820200-ECBD-11CF-8B85-00AA005B4383} to change the value of IsInstalled DWORD to 0;
2, put it in the XP installation CD, start - running "Rundll32.exe setupi, installhinfsection defaultinstall 132% windir% / inf / IE.inf" Note: Repair IE does not necessarily solve the problem, just one process The idea of the problem.
