Hi there! My name is*****'m sorry that you're having this problem. I will do my best to help. Can you tell me please what model your Kindle is? If you're not sure, please look for a serial number. If you can't find it on the Kindle itself, you can find it on the Manage Your Kindle page of your Amazon account (in the Manage Your Devices section).
This problem and many others are often the result of a "glitch" in the software. The following instructions for resetting the device should work regardless if your Kindle model.Please do the following:
Remove the charger from the Kindle and hold the power button or switch in the OFF position for about 20 seconds.
Release the button or switch, then connect the charger and try to turn on the Kindle.
If this doesn't work, please repeat the steps and this time hold the power button or switch in the off position for a full 40 seconds. This should reset the Kindle to factory defaults. You will know that it successfully reset to factory defaults, if it reset the Kindle back to the way it was when you took it out of the box. Did it do that? If not, please try it again, being sure to hold the power button for a FULL 40 seconds. If it did require you to set it up again, then the factory reset was successful.
If you do have to reset it to factory defaults, you don't have to be concerned about losing your books. The books that you have purchased from your Kindle will continue to be available at the Amazon website under My CONTENT if you should wish to download them again at some point in the future.
If a factory reset does not resolve the issue, and you continue to see the error message, then it is definitely a hardware problem. If your Kindle is under warranty, you can contact Amazon for repair or replacement. If it is not, then you should consider replacing it, as the cost of a repair is likely to approach or exceed the cost of replacement.
If the information that I have provided has been helpful, would you mind taking a moment to rate my service? I'd really appreciate it! As an independent contractor for just answer, I do not receive credit for my answer and I am not compensated in any way without a rating. If you need more help, please tell me exact model of your Kindle. If you're not sure, please look for a serial number. If you can't find it on the Kindle itself, you can find it on the Manage Your Kindle page of your Amazon account (in the Manage Your Devices section).