Computer lost but ends the game as "Game Drawn by Stalemate"

Why Computer lost?

The pieces are located as follows:

Black King: g7, Black Pawn: a5

White Rooks: c8 and h8, White Bishops: g6 and c1, White Knight b1, White Queen f5, White King g1, White pawns e6,a4,c3,e3,b2  

Site "Chess.com iPhone"]
[Date "09/08/2012 10:56PM"]
[White "ST1300"]
[Black "Computer"]

1. g4 d5 2. Nf3 Bxg4 3. Nd4 e5 4. Nb3 Nc6 5. c3 Nf6 6. Bg2 Bd6 7. a4 0-0 8. h3 Ne7 9. h4 Nf5 10. f3 e4 11. fxg4 Bg3+ 12. Kf1 Nxg4 13. Rh3 Bxh4 14. Kg1 Qd6 15. Nd4 Ng3 16. Rxh4 Qf4 17. Nf3 exf3 18. exf3 g5 19. Rxg4 Qe5 20. Ra3 Qe3+ 21. dxe3 Ne4 22. fxe4 h5 23. Rg3 f6 24. Bf3 a6 25. Bxh5 Rf7 26. exd5 Rc8 27. Rb3 Rd7 28. Rxb7 Rcd8 29. Qd4 Rf8 30. Bg6 Re8 31. Bxe8 Rd6 32. Rxc7 Re6 33. dxe6 a5 34. Bg6 Kh8 35. Rc8+ Kg7 36. Qe4 f5 37. Qxf5 g4 38. Rxg4 Kh6 39. Rh4+ Kg7 40. Rhh8 1/2-1/2

That's not a loss, it's a stalemate. Black has no move, but is not in check. It's scored as a draw.

Thanks I just joined last week and I am re learning the game. I played many years ago as a kid.  I wish I had remembered what a stalemate is, I would have played my end game differently since I still had a lot of my pieces left.