I have kind of problem with the DHCP. I have CISCO ASA 5510 router with DHCP server running on it. Windows 7 machines can't receive IP from the DHCP server. Machines running Mac OS easily gets adresses and works fine. thanks.

Hi, After checking your issue, it seems the problem with CISCO router. Please try to connect Windows 7 without CISCO ASA 5510 router to see if can get IP address from DHCP. And does your PC join the domain? Try to leave the domain and rejoin for test. Furthermore you can disable IPV6, or login with Safe Mode with connect to see if the same issue occurs. If the problem persists, I suggest you asking Windows Server Forum for further help: http://social.technet.microsoft.com/Forums/en-US/category/windowsserver The reason why we recommend posting appropriately is you will get the most qualified pool of respondents, and other partners who read the forums regularly can either share their knowledge or learn from your interaction with us. Thank you for your understanding. Regards, Leo HuangPlease 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.