-Try to press the reset for 30 sec then after reset power cycle
-Try to ping the router (ping 192.168.1.1, if you got a reply try to flash the firmware. You can download the firmware to Linksys.com
-If you can't ping the router, try putting a static IP address on your pc IP = 192.168.1.2-254, subnet = 255.255.255.0, gateway = 192.168.1.1
-If still can't ping the router call Linksys tech 800-326-7114, maybe RMA