Hello, My name is ***** ***** I'll be assisting you. I'm sorry you're having problems.
The problem you're having is often due to the software in the Kindle locking up and it needing to be rebooted. To do this, simply press and hold the power button on the Kindle for 40 FULL seconds, then release and wait a full minute for it to reboot (do no press anything else within that minute). If this does not cure the issue, try that reset up to THREE TIMES and wait the full minute to see if it reboots.
If you're still running into problems, then try plugging the Kindle into the charger for 15 minutes, then eject it and try the reboot a couple of more times.
If the issue goes beyond that then it would indicate a hardware fault in the Kindle that does require repairs made to the unit. Given the age, it is not cost effective as the unit is getting on in year as far as electronics go and it is likely that it would not last much longer even after a costly repair. I would instead suggest purchasing a new Kindle from Amazon. You will be able to transfer all of your books and downloaded content once the new device is registered to your Amazon account.
Other than that, I'm sorry for the bad news here and wish there were a quick fix.
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