PowerBook g4 turns on cd and fans spin for a second and then turn off

Whe

This is what happens. It has no hdd(but it should show? sign, right) the ram was tested in other tibook and works. What should I do?

crwdns2893858:0crwdne2893858:0 crwdns2893862:0crwdne2893862:0

crwdns2894050:0crwdne2894050:0

crwdns2889612:0crwdne2889612:0 0
crwdns2892346:0crwdne2892346:0