flashing question mark at startup

my laptop fell yesterday but it worked normally after that. i tried to turn it on after a couple of hours and got a flashing question mark.

an installation disk didn't come with it when i bought it so i can't do the disk recovery.

holding the option key at restart (for startup manager) starts internet recovery ''starting internet recovery this may take awhile" and then an error shows up ( -2105F).

i tried resetting PRAM but the flashing question mark is still there.

is there a way to fix this or recover the files on the laptop?


thanks


macbook pro model: md313ll

Mac OS X 10.7 Lion