I have a Windows XP machine connected to a wired ethernet. This machine was working fine, acquiring IP address from DHCP server, etc. ipconfig /all showed IP address, correct default gateway pointing to my router (correctly) and correct DHCP server address inside my LAN. Then ever since some unrelated relocation of the computer behind desk, I have be unable to connect to LAN. The machine sees the router and tries to obtain DHCP address but times-out. Looking at ipconfig /all for the Ethernet adapter's information, I note that the gateway address is wrong as is the DHCP server's address. Both point to an unknown IP address that's outside my LAN. Is there any way to "reset" the information that's stored with the adapter as shown in ipconfig /all output? I can compare non working machine to one that's on LAN that works fine and see that the one that's working has correct Gateway address, DHCP address, and a valid IP address on the LAN. I don't know what might have happened to reset these to invalid address such that the machine can no longer find the DHCP server, obtain IP address, etc.