boot device problem

[minager]

i have a travelmate 4150 laptop, one when i open my pc it cannot start up and it required restart. when i restared i went first to bios set up to check my boot sequence and exit, but all of the sudden my pc only appears like this

Boot Device
Floppy
hard disk
cd-rom


I tried everything but no luck, for the record i did not change anything when i first went to the bios set up.

Pls i need help here guys cause my pc is totally useless now! Any help would be highly appreciated, thanks