Mikrotik Kernel not found

hello everyone I have a problem with a rb600 mikrotik, when i turned on the two leds (blue and green) always are on, and i tied to connect via serial port hyperterminal connection and appears the message:
RouterBOOT booter 2.11
RouterBoard 600

CPU frequency: 400 MHz
Memory size: 64 MB

Press any key within 2 seconds to enter setup..
kernel not found
Please, check ethernet cable…
Ethernet link absent…
trying bootp protocol…

… failed
kernel loading failed


so if you know how install the kernel I´ll be glad
thank´s and sorry for my inglish

Run Netinstall to install MikroTik RouterOS on this router,
http://www.mikrotik.com/testdocs/ros/2.9/guide/netinstall.php