I have just recently bought a new HP625 Windows7 prof machine and I am unable to get IP address from zyxel router, I get the error message unable to contact DHCP server if I try a ipconfig /renew. However other computers work fine in this room but they are not running Windows7. I have disabled the IPv6 but no difference, but strangely this computer works fine in another room. The network point is new in the faulty room that only works with the vista machine, if the cable is not quite terminated correctly will this effect windows7 more than other OS