Unfortunately, You cannot as it is an old devide that is incredibly difficult to get new parts for.
in walmart
buy new battery in Canada or ship from www.tambattery.com
Means "personal computer" you type in ur user and the code you see on your tamagotchi then you will see your tamagotchi on the computer screen.
On your tamagotchi log in screen, just press "B" and type in the logout code.
the code will apear in your tamagotchi screen when your tamagothci turns into an adult
once you are log in you will see your tamagotchi on screen. then it will say your log out number.
When that screen appears it usually means your Tamagotchi is dead or it went home.
go on to tamagotchhi town and hit log in as tamagotchi then go into pc on the tamagotchi and it will give you a log in code type in the code to the computer and your tamagotchi will be on the screen.
it'll Have a black screen with a Z.
How bright the screen is (the black on the white)
A tamgotchi clone is when there two tamas on the screen.
it is asleep