Sansa m240 full and not operating

My mp3 player was working ok.

I dropped mp3 on it.

I check the free space was about 1 meg.

I unplug the player from the computer.

It starts the listing sequence then stop and power off.

After that I tried to power on, it turn on tot the welcome screen and power off and after that power on by himself and off ans so on.

I tried to plug it to the computer and nothing happen.

Tried to turn the hold button, nothing happened.

The mp3 is probably too full but I can’t get to it to free space.

Any body help?