sansa Express is not switch it on

The Sansa Express 2.0GB  worked fine few hours not even one day.  Now, it will not turn on and will not appear on my computer.  If I press “ON” button, it says scandisk and shuts off.  Does nothing when I plugg it in computer. I tried a hard reset. 

Please reply to me as soon as possible. 

reply plz.

Seems to work pretty well.