Cannot connect to internet

Hi,  

Welcome to Microsoft Windows 7 Answers Forum!

To find the root cause of this issue, we need more information from you to help troubleshoot your issue.  Please answer the following questions as best you can.

 a) Have you checked with the router vendor?

Method 1: Here you may try to uninstall and then reinstall network adapters and check if the issue gets fixed...

Uninstall and reinstall the sound and Network adapters drive from device manager. Steps to follow:

i.                     Click Start, type devmgmt.msc in search box and hit enter.

ii.                   On the “Device Manager” window, Select the device

iii.                 Right Click on the device and click uninstall

iv.                 Restart the computer once the driver is uninstalled.

v.                   Install the latest drivers from the manufacturer and check if it works

Also remove it from the programs and feature and try to install the latest drivers and check for the issue, to do that follow the below provided link.

Uninstall or change a program

http://windows.microsoft.com/en-US/windows7/Uninstall-or-change-a-program

Also you may Disable the DHCP BROADCAST to do that you may visit the below link.

http://support.microsoft.com/kb/928233

Ignore the title of the link as this is applicable even for windows 7.

Method 2: Try resetting the TCP/IP stack.

To reset the TCP/IP stack go to this article and either click on "Fix it for me" or follow the instructions to fix it yourself: http://support.microsoft.com/kb/299357

If still the same problem persists then try the next method.

Method 3:  check if the problem persists in safe mode with networking (step 1). If the problem doesn’t persists in safe mode with networking then perform clean boot (step 2) on your computer.

Step 1: To use a Safe mode with networking option, follow these steps:

1.    Restart your computer and start pressing the F8 key on your keyboard. On a computer that is configured for booting to multiple operating systems, you can press the F8 key when the Boot Menu appears.

2.    Use the arrow keys to choose Safe mode with networking in Windows Advanced Options menu appears, and then press ENTER.

Step 2: Starting your computer by using a minimal set of drivers and startup programs so that you can determine whether a background program is interfering with your game or program. This kind of startup is known as a "Clean boot."

To perform a clean boot on a computer, follow these steps.

 1.    Click Start, type msconfig in the Start Search box, and then press ENTER.

 If you are prompted for an administrator password or for a confirmation, type the password, or click Continue.

 2.    On the General tab, click Selective Startup.

 3.    Under Selective Startup, click to clear the Load Startup Items check box.

 4.    Click the Services tab, click to select the Hide All Microsoft Services check box, and then click Disable All.

 5.    Click OK.

6.    When you are prompted, click Restart.

7.    After the computer starts, check whether the problem is resolved.

 Please monitor the system in the Clean Boot environment. If the problem does not occur, it indicates that the problem is related to one application or service we have disabled. You may use the MSCONFIG tool again to re-enable the disabled item one by one to find out the culprit.

 If your issue is resolved, follow the How to Determine What is Causing the Problem section in the KB article to narrow down the exact source.

http://support.microsoft.com/kb/331796

Also, see the section on how to return your computer to a Normal startup mode

You may also visit the below link to Troubleshoot problems finding wireless networks

http://windows.microsoft.com/en-US/windows-vista/Troubleshoot-problems-finding-wireless-networks

Hope this helped

Thanks and Regards:

Suresh Kumar- Microsoft Support.

Visit our Microsoft Answers Feedback Forum and let us know what you think.

I occasionally get this issue when doing a fresh restart with windows 7 64bit. Its just this computer...i have 2 game consoles and a windows XP comp on the network, and they all function properly, so the router doesnt seem to be the problem.

    The best thing i've seen to fix it quickly is to open up your network and sharing center, then click on the blue link for the public network and disable it. When you click on the red X that appears on the network map at the top, windows will identify that the adapter is disabled, and will give you the option of performing the action as an administrator. Oddly enough, this works every time...i've been looking around for a permanent solution with no luck, but this has gotten me by for the time being.

I also have this problem with a desktop connected via cable with Windows 7 64-bit, I cannot connect at all either directly through a connection from my cable modem or through my wireless router.

I also cannot connect through a cable with my Windows 7 32-bit laptop. I can connect wireless though.

Would really like to fix this.

cshields,

It looks like your problem is similar, but differs from the original question. Please start your own question and provide the details of your problem so that we can help you further.

http://social.answers.microsoft.com/Forums/en-US/w7network/threads

Thank you