I am setting up a new HP Windows 7 Pro 64-bit computer for a client. It connected to the network until I installed Service Pack 1 today. Now it says something like unknown network and does not obtain an IP address. Device Manager says the network adapter is working properly. Do i need to uninstall Service Pack 1? Thank you. ArthurArthur Priver

Hello, start by updating your NIC card driver. This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner 2010 / 2011 Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows 7, Configuring Microsoft Certified IT Professional: Enterprise Administrator

Hi Arthur, How's going after you update the NIC driver? Please feel free to giv us any update. Regards, Miya TechNet Subscriber Support in forum. If you have any feedback on our support, please contact tngfb@microsoft.comThis posting is provided "AS IS" with no warranties, and confers no rights. | 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.

Before I could work on updating the drivers, I found that the DHCP server had failed. Once I resolved that problem, the computer did connect to the network. Thank you for the suggestion. ArthurArthur Priver

Glad to hear the issue is resolved. Regards, Miya TechNet Subscriber Support in forum. If you have any feedback on our support, please contact tngfb@microsoft.comThis posting is provided "AS IS" with no warranties, and confers no rights. | 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.