Hello Jalcine,
The company I work for has a lot of Remote users and we get lots of calls for router/set up issues.
I can offer you a few tips but I am no Network guru.
Have you tried releasing and renewing the IP address yet?
Click on start then run.
Type ipconfig and hit enter.
make a note of your IP to comapre later.
At the prompt type Ipconfig /release
[make sure to include the space before the forward slash (/)]
Then at the next ptomp type Ipconfig /renew.
[make sure to include the space before the forward slash (/)]
you can now do an ipconfig again tomake sure your IP is different.
If so, go ahead and try to setup your router again.
If this doesn't work let me know what the IP was each time, if it's all 0's or ends in 169...the solution gets involved.