Its just not working. there's a red dot on the

Power Cycle it. Unplug the power cable from the Router (not from the wall outlet.) next unplug the Modem power cable. wait 30 full seconds and re connect the Modem FIRST and WAIT. After the Modem lights all up, THEN reconnect the Router. This should fix it. If not, check your internet cables and verify with your Provider that your account is active.

Reset your router to factory defaults.
For that press RESET button for 10 seconds it is in back panel of router.
hen connect your router to computer with ethernet cable.
Then you can access it with following link.
http://192.168.1.1
or
http://192.168.0.1
type user as "admin" and password as "admin" or blank or "password"
Then you can see configuration page of router.
Set WAN settings as your internet service provider settings.
Enable DHCP .
Click on wireless and enable wi fi.
If you want secure router then enable WEP security then add new code it is your password key for connect wi fi.
Also change channel type in wireless option 4,6 and 11 channel are best.
Try 1 by 1 then save settings and restart router.

Let me know if you need further assistance.
Thanks.