i have a windows 2003 server i can ping my LAN and My gateway, but when i try to ping or access the internet the result is "Hardware error". i was working fine before, the only thing i did recently was installing SQL 2005 can that be the reason? please i need your help thanks

Does the eventlog show any errors about this issue? What kind of gateway are you using? Can you access the configuration interface of that gateway, to figure out, whether the problem might be on the gateway? Have you already contacted your ISP to check, whether the connection from ISP to your gateway is ok? What does a tracert google.com show?

Does the eventlog show any errors about this issue? you mean the event viwer? i didnt see anything about it there. What kind of gateway are you using? a firewall Can you access the configuration interface of that gateway, to figure out, whether the problem might be on the gateway? yes, i can access it and i have double checked it, it is ok, also all the other PCs on the LAN can access the internet normally Have you already contacted your ISP to check, whether the connection from ISP to your gateway is ok? the connection is fine What does a tracert google.com show? unable to resolve target system name google.com i also tried it by ip the result is: Hardware error

If there are 2 NICs in the server, have you checked the default gateway settings. There should only be one NIC with default gateway setting to your internet gateway.