It means you don't have any operating system (system files) on the micro sd card. You need to have an operating system in order to use it.
Read the AKAIO Wiki that is stickied at the top of this forum. I'm surprised you didn't do that yet.
the "This occurs after you have posted 5 messages on the forums. Your account will be automatically upgraded to 'Newcomer' within the hour, unlocking additional features such as posting links and more." message wont go away