Most likely, your router is dead. However, there is hope if you can manage to somehow ping your router. To try various ways to ping your router, do the following:
1) Power down your entire network. Disconnect your router, modem and computers.
2) Power up your computer.
3) In the computer, set it to IP address 192.168.1.20, subnet mask 255.255.255.0 , default gateway 192.168.1.1 , DNS server 192.168.1.1
4) Also, in the computer, set ethernet card to 10 Mbps, full duplex
5) Power down your entire network.
6) Using ethernet wire, connect any LAN port on your WRT310N, directly to the ethernet adapter of your computer.
7) Power up your WRT310N and your computer.
8) Ping the WRT310N at 192.168.1.1
9) If ping is successful, stop, and report back with your ethernet card settings.
10) If the ping fails, then return to step 4 above and successively try other ethernet card settings with every combination of speed and duplex. So try the following:
10 Mbps, half duplex
100 Mbps, half duplex
100 Mbps, full duplex
1000 Mbps, full duplex
1000 Mbps, half duplex
11) If ping fails with all these settings, then your router is totally dead.
