This symptom is COMMON when you allow BOTH the wired and wireless adaptors to
be active at the same time.
DISABLE the adaptor you are not using and the problem goes away
Apparently you you would prefer the wired connection
(else you wouldn't have used the wireless and complained about the issue with the wired).
On my laptop, at home I use the wired ethernet, but when traveling I use the wireless.
The Toshiba ConfigFree software makes it trivial to disable the adaptor not in use,
but if necessary, you can use the Device Manager to control the devices.
Once the WiFi is disabled, you only need to set the wired adaptor to use DHCP for
both the IP and DNS settings, save and the system will connect in about 20 seconds.
Using
ipconfig /all should show an IP address OTHER THAN 169.254.x.x
(likely to be the 192.168.0.2 used previously by the wireless).
If
ping www.google.com returns timing info, you're good to go.