Unusable Calculator....Error Screen

[williewillus]

I played phoenix shooter Assembly app.
Game Overed and pressed the key to exit...
Suddenly calculator displayed:
ER_throw
SR=0000 _main=0034d52
D[zero]=30303935 A[zero]=00008b38
D1=0000000f A1=00003fe4
D2=00003fe4 A2=00006458
D3=00000000 A3=3030395
D4=00000000 A4=008242ae
D5=00000000 A5=0003fff4
D6=00000406 A6=00003f8e
D7=b3df3030
Stack:0000ad940000000100003fe4
Press [ON] to exit

I pressed on, nothing happened.
Take out battery put it back in, nothing happened.
Help, I need it for school....which starts in a few weeks