Here you’d better charge it for more than 30 minutes and then hard reset Kindle. Some users reported that they fixed Kindle not showing up on Windows 10 by charging for a longer time. Also, you can connect the Kindle to a different computer. If your PC can recognize the device, the USB cable is functional. To check if functionality, you can try connecting the USB cable to a different device. Once the USB cable gets damaged, you may encounter Kindle fire not showing up on PC. Usually, Kindle is connected to the Windows PC via a USB cable. Use a different USB cable or computer.When you encounter Kindle not showing up on PC, you can try the following preliminary fixes first. The Kindle connectivity issue can be caused by various factors such as USB cable, incorrect connection, corrupt drivers, etc. Kindle doesn’t show up on PC after it’s upgraded to the latest build.
Disable the USB Selective Suspend Feature