I had this problem. I called the nabi support line and they will tell you how to reboot the system. Once you reboot it to factory settings you will have to download all of the games again. Unfortunately, this is the only way to get it unstuck! I have two nabi's (one for each of my sons) and I had to do it for the other nabi a couple of weeks after the first one. I googled how to reset the nabi and there should be a youtube video that walks you through it! https://www.nabitablet.com/support/produ...-need-to-perform-a-factory-reset-on-my-dreamtab-545 This is the link to the nabi website with the instructions on how to do the reset