cant seem to connect desktop to new router via Ethernet cable.
laptop and other wireless devices connect fine.can connect to old modem no problems.cant access router though 192.168.1.1 , but can on laptop.
Messages i receive are unidentified public network and Ethernet doesn't have a valid ip configuration have tried resetting netwok adapter resting router etc
the set up disk for the router would kept asking for a password witch it never had had to set up manually from laptop
the router is a dlink dsl-2750b and desktop is running windows 8.1
appreciate any ideas help
"cant seem to connect desktop to new router..................can connect to old modem no problems..............cant access router though 192.168.1.1............unidentified public network and Ethernet doesn't have a valid ip configuration"
As you have no problems connecting to your old router then it can't be a hardware problem and it sounds very much like a network settings issue.
The first thing to do is to make sure that the TCP/IP IPv4 settings for your Ethernet adapter are set to obtain addresses automatically.
If that doesn't help then a workaround for your two error messages that frequently works is to assign fixed IP addresses and a DNS server to the Ethernet adapter's TCP/IP properties.
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