Restart and select the error message for the correct boot device on the Windows computer
If you have found a black screen with the message – Reboot and Select proper Boot device, Or Insert Boot Media in Selected Boot device and press a key, you are in the right place, because we will show you how to solve this problem.
This is a common problem among those who have changed their hard disk or inserted an additional hard disk. Whether you are using Windows 10 or an earlier version of Windows – you may have the same problem. There are many people who want to upgrade their hard disk by installing an additional hard disk, but if they do, they are very likely to receive this message when starting the machine after changing the hard disk.
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