Try brand new batteries and pressing the reset button gently. Then try pressing a button (like B button then set the time again, make sure the hour is not 0 and then wait 5 max minute (often 1-2 minutes.) if not then try something else. Sometimes old worn out batteries make tamagotchis do weird things....
Edit: I think there's data stored in your tama, did you try downloading first? It might take you to where you left off last time? Like long time ago?
Unless you don't see download.
I now know that your tama is brand new, you may want to contact your seller in case of defective product.
Edited by derekq, 16 July 2014 - 05:05 PM.