I just finished building a new PC and my network comes up as unidentified network - public network. It does not allow for change since it appears grayed out. I tried to disable and renable but same result. I have two other computer on the same network and they are working just fine. My harware is an Asus P7P55D-E LX motherboard, Intel I5 processor. The NIC is on-board 10/100/1000 using a realtek driver. Everything else works with windows 7 pro.

From this Windows Answers thread: To troubleshoot your issue you may try the below methods one by one. Method 1: Update the network driver. Steps to update network driver: 1. Click on start button. 2. In the search box type devmgmt.msc and then press enter. 3. Select the network card device and right click on it 4. Now select properties. 5. In the properties window, under Driver tab, click on Update Driver button. 6. After the installing the updates restart the computer. For more information visit: http://windows.microsoft.com/en-us/windows7/Update-a-driver-for-hardware-that-isnt-working-properly 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: Here you need to troubleshoot using the Network troubleshooter in Windows 7 and check for the issue to do that follow the below provided link. http://windows.microsoft.com/en-US/windows7/Using-the-Network-troubleshooter-in-Windows-7 Jerry

Go to ctrl panel>network & internet>network & sharing center, under view your active network, are you able to change the public network to home network?Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

From this Windows Answers thread: To troubleshoot your issue you may try the below methods one by one. Method 1: Update the network driver. Steps to update network driver: 1. Click on start button. 2. In the search box type devmgmt.msc and then press enter. 3. Select the network card device and right click on it 4. Now select properties. 5. In the properties window, under Driver tab, click on Update Driver button. 6. After the installing the updates restart the computer. For more information visit: http://windows.microsoft.com/en-us/windows7/Update-a-driver-for-hardware-that-isnt-working-properly 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: Here you need to troubleshoot using the Network troubleshooter in Windows 7 and check for the issue to do that follow the below provided link. http://windows.microsoft.com/en-US/windows7/Using-the-Network-troubleshooter-in-Windows-7 Jerry

I cannot change the "public network" it is greyed out and is not allowing change.

Hi, Please follow Jerry’s suggestion to update NIC card and use network troubleshooter to check the issue. Furthermore, you can also temporary disable firewall, antivirus program and router(If it has), disable IPv6. Also try to logon with Safe Mode with networking for test. Hope that helps. Regards, Leo Huang TechNet Subscriber Support in forum. If you have any feedback on our support, please contact tngfb@microsoft.com Leo Huang TechNet Community Support

Hi, Please follow Jerry’s suggestion to update NIC card and use network troubleshooter to check the issue. Furthermore, you can also temporary disable firewall, antivirus program and router(If it has), disable IPv6. Also try to logon with Safe Mode with networking for test. Hope that helps. Regards, Leo Huang TechNet Subscriber Support in forum. If you have any feedback on our support, please contact tngfb@microsoft.com Leo Huang TechNet Community Support

Hi, As this thread has been quiet for a while, we assume that the issue has been resolved. At this time, we will mark it as ‘Answered’ as the previous steps should be helpful for many similar scenarios. If the issue still persists, please feel free to reply this post directly so we will be notified to follow it up. You can also choose to unmark the answer as you wish. BTW, we’d love to hear your feedback about the solution. By sharing your experience you can help other community members facing similar problems. Thanks for your understanding and efforts. Regards, Leo Huang TechNet Subscriber Support in forum. If you have any feedback on our support, please contact tngfb@microsoft.com Leo Huang TechNet Community Support