Routerboard 450G not responding and LEDs are flashing

I just bought RB450G.
When I started to configure the network settings, it can connect via Winbox at the beginning.
However, after a while, the RB450G kept restarting the system.
Then, I tired to telnet and use the command “/system reset-configuration” to reset the router and I waited for the reload.
But I’ve waited for a half hour, the NeighborViewer still cannot detect the RB.
Then, I tired to perform the hard reset that I pull the power cable off and press the reset button (the tiny button, it is a reset button right?)
When I connect the power cable to the RB, all LED lights, except the green LED which next to the power cable, including all interfaces LED lights are keep flashing.

My RB450G is not responding, all lights are keep flashing when I switch on the router.
Anyone can help me. :frowning:

Do you have a serial cable? Try to do a netinstall.

http://wiki.mikrotik.com/wiki/Manual:Netinstall