Issues with saving

[ryu1ken]

Hello, i was playing new super Mario brothers and nearly got up to the final stage and then had to go to bed. I saved it with shift f1 and when i woke up it did not load, i hear the music of that stage but the picture is not showing up. Ive waited for 1 minute and it wont work, does anyone know why?. Also, when i try to load it there's an error about how my wiiremote is not in sync or something like this. I am not using a remote but a keyboard.