NDS Error

:o I was going to play mario kart for the No$gba Emulator.IT loads the Nintendo icon but it says the data could not be written Please turn the power off and restart. Please help?

The Common Issues thread has your answer.
https://www.romulation.org/forum/index.php?topic=1462.0

i can't find it

Second issue down. Look carefully.

It is there, here is what it say:EMULATOR: Go to the Emulation Settings, and change NDS backup save media accordingly, and reset, until you do not receive the errors. If you want it a bit easier, you can get no$gba 2.6a, which has a Auto option, which automatically chooses the right type according to the game, which makes a lot more easier. If this method does not work, simply wait for a new release of the emulator you are using, or resort to using another emulator for the time being (iDeaS etc.)