I lost all internet connections

original title; I lost all internet connections and all attempts to repair did not do what I do?

I lost all internet connections.  I tried all to solve the problem, but without success.  Is it at a certain level of the code that I should bring in a professional setting?

Hello

1. what attempts to repair did you try?
2. don't you make changes to the computer before the show?
3. What is the accurate and complete error message you get?
4 are you using wired or Wi - Fi?

Method 1
I suggest you try the steps from the following link:

Windows wireless and wired network connection problems
http://Windows.Microsoft.com/en-us/Windows/help/wired-and-wireless-network-connection-problems-in-Windows

Method 2
I suggest you try the steps from the following link:

How to reset the Protocol Internet (TCP/IP)
http://support.Microsoft.com/kb/

Important: This section, method, or task contains steps that tell you how to modify the registry. However, serious problems can occur if you modify the registry incorrectly. Therefore, make sure that you proceed with caution. For added protection, back up the registry before you edit it. Then you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article: http://support.microsoft.com/kb/322756

Additional information:
How to troubleshoot wireless network connections in Windows XP Service Pack 2
http://support.Microsoft.com/kb/870702

How to troubleshoot possible causes of Internet connection problems in Windows XP
http://support.Microsoft.com/kb/314095

How to set up a connection to the Internet in Windows XP Professional
http://support.Microsoft.com/kb/305549

Tags: Windows

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