yes tried that.Have you tried uninstalling the driver of your ethernet adapter and then installing again by restarting? If not, do it asap.
need to teach myself your points, but i don,t have problem with 2 laptops and my other pcand check the ethernet adapter settings haven't been configured with manually IP addresses for the gateway and DNS fields and the PC IP is in the IP range provided by the modem.
also check MAC filtering isn't turned on in the modem. maybe the MAC address of the wireless adapter has been allowed but not the MAC address of the ethernet adapter.
In my router settings under connected devices it says connected to ethernet.with other PC's connect OK, that means the issue is still with your ethernet port or the modem config.
to check your ethernet settings, I'll assume you have Windows 10, go to Control Panel (change View By: to small icons), click Network and Sharing Centre, left hand column, click Change Adapter Settings, right click the ethernet icon, select Status.
what does the IPv4 Connectivity say? should show Internet as the status.
Click Details, what are the values for IPv4 Address, Default Gateway and DHCP Server?
also note down the Physical Address, this is your PC's MAC address.
the gateway address should be the IP address of your modem.
close out of that box and click Properties, untick Internet Protocol Version 6, double click Internet Protocol Version 4, check both sections are set to Obtain IP address automatically. OK out of all the windows.
go to a browser and type in the IP address of the modem.
that will log you in to the modems configuration page after you enter the username and password of the modem. if you don't know them and haven't changed them, there is usually a sticker somewhere on the modem to tell you what they are.
once in the modem, look around for MAC filtering to see if your PC's MAC address has been blocked.
with other PC's connect OK, that means the issue is still with your ethernet port or the modem config.
to check your ethernet settings, I'll assume you have Windows 10, go to Control Panel (change View By: to small icons), click Network and Sharing Centre, left hand column, click Change Adapter Settings, right click the ethernet icon, select Status.
what does the IPv4 Connectivity say? should show Internet as the status.
Click Details, what are the values for IPv4 Address, Default Gateway and DHCP Server?
also note down the Physical Address, this is your PC's MAC address.
the gateway address should be the IP address of your modem.
close out of that box and click Properties, untick Internet Protocol Version 6, double click Internet Protocol Version 4, check both sections are set to Obtain IP address automatically. OK out of all the windows.
go to a browser and type in the IP address of the modem.
that will log you in to the modems configuration page after you enter the username and password of the modem. if you don't know them and haven't changed them, there is usually a sticker somewhere on the modem to tell you what they are.
once in the modem, look around for MAC filtering to see if your PC's MAC address has been blocked.