Network Connection Fixes

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1. Click "Start" and type "Fix Net" and press enter to let windows try to diagnose and repair problems.
2. Verify network drivers are up to date for your adapter... (upgrading may
use old Vista drivers that are not compatible with 7) Click Start and type
"Device Manager" and look for any driver errors.. usually a yellow triangle.
3. Click Start and type and enter "ev" and it will run the Event Viewer. Look
under Custom at the Administrative logs. Problems with initializing drivers are
logged here at startup.
4.Click Start and type "perfmon /report" and press enter... it takes 60 seconds
to gather a comprehensive diagnostic report and then it presents resolutions.
5. Disable NORTON and all AV programs and Firewalls. Norton 360 is NOT
compatible with Win 7.
6. Reset the router and test
7. Bypass the router, connect directly to modem and test - not exactly a fix but narrows the problem.
8. Go into your device manager. (Control Panel --> Device Manager) and open up the
drop down list under Network Adapters. Find your network controller(s), right
click it (them) and uninstall. After uninstall is complete, click any other
device in your Network Adapters and choose "Scan for Hardware Changes". Windows
should automatically detect and reinstall your network controllers.
9. Go to Task Manager /services /services
and Disabled the "Function Discovery Resource Publication" service
Note: Windows 7's new "HomeGroup" connectivity requires this service.
10. Remove the Bonjour service if you have Apple/iTunes
- Click Start and enter and run this command: "C:\Program Files\Bonjour\mDNSResponder.exe" -remove
- Navigate to the following folder in Windows Explorer. "C:\Program Files\Bonjour"
and Rename the mdnsNSP.dll file in that folder to mdnsNSP.old
- Restart your computer and DElETE the "Program Files\Bonjour" folder

11. Fix for NVIDIA USB Enhanced Host Controller Interface (EHCI) chipset BUG
http://support.microsoft.com/kb/976972

12. Cannot get IP address
http://support.microsoft.com/default.aspx/kb/928233

13. Unidentified Network
Go to the NIC properties and uncheck these things:
-Internet Protocol Version 6 (TCP/IPv6)
-Link Layer Topology Discovery Mapper I/O Driver
-Link Layer Topology Discovery Responder
14.Make sure that all wires are connected (for example, make sure your modem is
connected to a working phone jack or cable connection, either directly or
through a router).
15.If you're trying to connect to another computer, make sure that computer is on
and that you have enabled file and printer sharing on your network. For more
information, see Networking home computers running different versions of
Windows.
16.If your computer has a wireless network adapter, Windows will automatically
detect wireless networks that are nearby. To see a list of wireless networks
that Windows has detected, click the Start button , and type "Conn" then click
Connect to netwok. If Windows does not detect a network that you think is in
range of your computer, open Help and Support and search for "Troubleshoot
problems finding wireless networks."
17. Still not working? Did you do a clean/custom install?
Upgrading frequently fails for too many reasons to list.
18. If these steps don't solve the problem, look for a specific problem in the following list.
http://windows.microsoft.com/en-us/windows-vista/Troubleshoot-network-connection-problems

 

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Troubleshooting Network Issues on Windows 7: A Comprehensive Guide In recent discussions about network connectivity issues on Windows 7, many users have shared effective troubleshooting steps. Below is a detailed summary of the most relevant techniques, which can help resolve common network problems.

1. Run Windows Network Diagnostics​

• Action: Click Start, type "Fix Net," and press Enter. Windows will attempt to diagnose and automatically repair any detected issues.

  2. Update Network Drivers​

• Action: Open Device Manager by typing it in the Start menu. Check for any yellow triangles next to drivers, indicating issues. Ensure that the drivers are up to date, as upgrading from Vista drivers may cause compatibility problems.

  3. Check Event Viewer​

• Action: Type "ev" to launch the Event Viewer, and navigate to Custom > Administrative Logs. This will show any driver initialization issues logged at startup.

  4. Generate a Performance Report​

• Action: Type perfmon /report into the Start menu and press Enter. This diagnostic tool takes about a minute to gather data and suggest solutions.

  5. Disable Security Software​

• Action: Temporarily disable Norton 360 and any other antivirus programs or firewalls, as these might conflict with network operations on Windows 7.

  6. Reset Your Router​

• Action: Power cycle your router and check if the issue is resolved.

  7. Connect Directly to Modem​

• Action: Bypass the router by connecting your computer directly to the modem to help isolate the issue.

  8. Reinstall Network Adapters​

• Action: In Device Manager, uninstall the network controllers and scan for hardware changes to reinstall them automatically.

  9. Adjust Services Settings​

• Action: Disable the "Function Discovery Resource Publication" service, as it is necessary for the HomeGroup feature.

  10. Handle Bonjour Service​

• Action: If you have iTunes installed, remove the Bonjour service by running:

  cmd "C:\Program Files\Bonjour\mDNSResponder.exe" -remove

  Rename mdnsNSP.dll in the Bonjour folder and delete the Bonjour folder afterward.

  11. Address NVIDIA USB EHCI Chipset Bug​

• Resource: Refer to Microsoft's Support for fixes associated with the NVIDIA chipset.

  12. Resolve IP Address Issues​

• Resource: Guidelines available at Microsoft Support for IP address connectivity problems.

  13. Unidentified Network Solution​

• Action: In Network Interface Card (NIC) properties, uncheck:
  • Internet Protocol Version 6 (TCP/IPv6)
  • Link Layer Topology Discovery Mapper I/O Driver
  • Link Layer Topology Discovery Responder

    14. Physical Connection Checks​

  []Action: Ensure all cables are properly connected, including the modem to a working phone jack or cable line.

  15. Network Sharing Settings​

  []Action: When connecting to another PC, confirm that it is powered on and that File and Printer Sharing is enabled.

  16. Detecting Wireless Networks​

  []Action: For wireless connections, type "Conn" in Start, then select Connect to network to view available networks.

  17. Upgrade Considerations​

  []Action: If problems persist, consider whether you performed a clean install. Upgrading from prior versions can lead to unforeseen issues.

  18. Further Troubleshooting Resources​

• Resource: If issues remain, consult the Microsoft Troubleshooting Guide for more detailed solutions.​

  These steps should cover most scenarios regarding network issues on Windows 7. If users continue to face connectivity problems, it's worth considering professional technical support.