You will need your Kindle to be have at least forty percent battery life in order to perform a hard reset.

In order to get the battery out of the Kindle, use your fingernails, or a small, pointy object like a pen. Do not use scissors or a knife, which could potentially damage the battery. Make sure when you return the back cover of your Kindle that it locks into place. You should hear a “snap” sound when it is secure.

There is some possibility that the Kindle will freeze as it reboots. This may be the case if your Kindle stays frozen on the reboot screen for more than ten minutes.