Windows XP operating system often encounters network failure analysis (1)

  
First, the system network problem
1, Windows XP can not access the Internet
to solve this problem mainly depends on the following two aspects:
· Some people are connected to have The problem, such a problem is well solved, as long as the IE tool - Internet Options - open the connection tab, click Settings, re-enter the password and then determine.
·When you have a NIC driver, go to the Control Panel - System - Hardware tab, click Device Manager, unmount the network adapter (Figure 1), then press OK to restart the system. If Windows XP recognizes your network card, it will automatically install the driver. Windows XP will not recognize it. You will be prompted to install the driver. Just install the driver and it will solve the problem. After some network cards are installed, the system will scan for a long time. Then, the connection icon with a yellow exclamation mark will appear in the lower corner. You need to set the IP address yourself by double-clicking the icon and clicking on the attribute in the displayed dialog box. In the General tab that pops up, click to select Internet Protocol (TCP/IP), click Properties, select Use the following IP address, and fill in the IP address with 192.168.1.X (X is any number in 2-10) Click on the subnet mask again, the system will automatically generate 225.225.225.0, and finally click OK to close the tab, click OK to close the General tab, and your network will be connected again.
Figure 1 to complete these steps After restarting the system, the network should be normal after the connection is established.
2, can not open the page on QQ.
If you can access QQ, but can not open the webpage, then your DNS service address is set. Problem!
·It may be that the original settings in your system were inadvertently;
·It may be that your broadband provider changed the DNS service address without notifying you.
Workaround:
Right click on "Local Link" in the lower right corner of the screen Icon, in the "Local Area Connection Status" box that opens, click "Properties".
You can also enter the "Local Area Connection Status" box by clicking "Start", "Control Panel", "Network Connection", click "Properties" "
In the "General" item of "Properties", find the "Internet Protocol (TCP/IP)" item, select it, click "Properties", and fill in the correct DNS service address (Figure 2).
Figure 2· As for QQ, you can't browse to your DNS. Check the DNS of your city or region.
·Propose to use Ghost backup: first download a dwarf DOS, then The next GHOST (you can use it without installing copy)
Restart, select the DOS tool under Windows XP to enter, Ghost local->to partetion-->to image under the running path. Select a disk to set the backup file. Image There is also a from image. The next time the system is broken, I choose this restore.
3, I can't access the Internet after installing the dual system
This problem is generally not related to the dual system, the problem should appear in the TCP protocol. Br>·First enter the command line mode, enter CMD, in At the command prompt, type "ping 127.0.0.1 (Figure 3)" to determine whether the TCP/IP protocol is successfully installed. If it does not work, reinstall the TCP/IP protocol. If the general rule is entered, go to the next step.
Figure 3. Enter "ipconfig" "Get the IP address of the local machine and the gateway address. Use "ping the local IP address" to determine whether there is a problem with the network card. If the ping fails, you need to reinstall the NIC driver. If you pass, go to the next step.
4, the network connection causes the CPU usage is too high
When the computer with Windows XP is installed as a server, when it receives the connection request on port 445, it will allocate memory and allocate a small amount of CPU resources for these Connection provides services.
When the load is too heavy, the CPU usage may be too high because there is an inherent trade-off between the number of work items and the responsiveness. You need to determine the appropriate MaxWorkItems settings to improve system responsiveness. If the value set is incorrect, the server's responsiveness may be affected, or a user may have too much system resources.
To solve this problem, we can solve it by modifying the registry: expand the [HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\lanmanserver] branch in the Registry Editor, and create a new one named "maxworkitems" in the right window. The DWORD value. Then double-click the value, type the following values ​​in the window that opens and save and exit:
If the computer has more than 512MB of memory, type "1024"; if the computer's memory is less than 512 MB, type "256".
5, Windows XP can not download updates
· Click Start, Run, enter the following command in the Run dialog box and press Enter
%windir%
After entering the directory, you can find a SoftwareDistribution directory, And rename it to SDOLD or something else. The renamed directory can be safely deleted, and the system will automatically recreate a new directory with the same name.
·If you still can't solve the problem, please enter the safe mode with the network and try the update again.
Finding updates is slower, just a temporary phenomenon.
6, can open the web page, but MSN can not log in
MSN can not log in when the network is unobstructed, this is generally related to the firewall settings to block the MSN connection service, the following describes several methods:
Method 1 :
There may be many reasons why you can't log in to the .NET Messenger Service or have various errors when logging in (for example: "0x81000370 error"). These problems can usually be solved in one of the following ways:
·The date/time property on your computer is set correctly: double-click the time to check if the date and time are set correctly.
·If your account number and password are not saved in MSN, you need to confirm that the account and password you entered are correct (please note the capitalization of the uppercase and lowercase letters and account number).
·Disable the "Auto detect" setting in your browser. For Internet EWindows XPlorer users, click the IE Tools menu, click Internet Options, click the Connections tab, click the LAN Settings button, and then clear the Automatically detect settings box.
·Clear IE cache and cookies: Open the Internet EWindows XPlorer browser, press the Tools menu, then select “Internet Options”, click the “Delete Files” button and the “Delete Cookies” button.
·Check IE security settings: Open the Internet EWindows XPlorer browser, press the Tools menu, select “Internet Options”, select “Advanced”, drag the scroll bar to the security selection, and confirm that “Check Server Certificate Revocation” is not selected. Also confirmed that "Use SSL 2.0" and "Use SSL 3.0" were selected. Then press "OK".
·Click "Start" - "Run", type: regsvr32 softpub.dll and press "OK".
·Check the wrong proxy settings. On the MSN Messenger Tools menu, click Options. On the Connections tab, make sure you clear the "I use a proxy server" checkbox.
· Firewalls and third-party applications may affect the connection to MSN Messenger. You can disable the application, firewall, or open the appropriate port on the firewall and then try to connect to the .Net Messenger Service.
·If you are using an ICS or router for your local area network, you may need to adjust some settings or update the hardware/firmware drivers.
If your Passport is not recognized, please log in to the Passport site at http://www.passport.com and confirm that it is identifiable there. If you can be identified there, but you still can't log in to the .NET Messenger Service, it's possible that the message server temporarily shuts down the maximum traffic that is being maintained or reaches the Internet (during peak usage periods). Please try again later. You can also check the server status page to see the latest information about the server.
·If the Passport site is still unrecognizable, go here: http://memberservicesnet.passport.com/memberservice.srf and select: "I forgot my password."
Method 2:
Enter MSN's "Options", then enter "Connect", then enter "Advanced Settings", delete the contents of the socks and http boxes, and then try "Test TCP Connection", done !~~~
Method 3:
Select "Run" under the "Start" menu of Windows, and then type:
regsvr32 softpub.dll
regsvr32 mssip32.dll
Run regsvr32 again Ititpki.dll
7, network connection causes the switch to be abnormal
In Windows system, if you install the network card device and driver, but do not specify the IP address, the default state will use DHCP to automatically obtain the IP address. At startup, if the DHCP server is in good condition, the login speed is faster; once the server is busy, Windows will wait for a valid IP address for a long time at startup, sometimes for a few minutes, and the user who knows the truth still thinks the system crashes. It is.
At the time of shutdown, sometimes waiting for the network connection to be disconnected will take a long time. It is recommended that you specify a fixed IP address as much as possible, and when shutting down, manually disconnecting the network connection tasks such as playing movies, Outlook, etc., and then shutting down will be faster. In addition, if your system supports STR function, then use standby or hibernation instead of shutting down the computer, the speed will be very fast.


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