check mo kung naka connect sa WAN port? baka sa LAN1, LAN2, etc. port ka nakaconnect.
edit:
-open cmd, type ipconfig /all, then check mo adapter kung may nakalagay na gateway, or baka 169.x.x ang nakalagay.. it means naka disable ang DHCP ng router mo
-Check mo rin proxy settings baka naka manual
-then sa DNS error, probe_dns_finished, etc.. open command prompt as administator, then type netsh winsock reset, restart computer..