The error Reboot and select proper boot device can occur when you start your computer. It indicates that your computer is unable to find a hard drive with Windows on it. Restarting your computer doesn’t solve the problem, but how do you fix it then?
In this case Volume E. You can verify it by typing Exit, then E: and then list the contents with the cmd Dir. You should see a folder Windows listed.
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Next we are going to copy the boot files to the EFI partion:
bcdboot e:\windowsRemove the installation media and restart your computer.
Damaged hard drive
If nothing worked so far then we have to assume that the hard drive is failing. The best option now is to remove the hard drive and connect it to another computer. You can use a simple USB to SATA connector that you can buy on Amazon for under $10. Or you can connect the hard drive as a second disk to another computer.
If you can access the hard drive from the other computer, then make sure you copy all your important files from it. When done place the hard drive back into your computer.
With your data secured, you can now reinstall Windows 10 on your hard drive and restore your files.
Hard drive not working on another computer as well
When the hard drive doesn’t become visible on another computer as well, then the hard drive is simply broken. Most of the time you can’t repair it, so your only option is to replace it with a new hard drive.
I hope your where able to fix the reboot and select proper boot device error with the steps above. Keep in mind that if you don’t see your hard drive in your BIOS, and your are sure it’s properly connected, then the hard drive self is simply damaged or corrupt.
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Always make sure that you make backups of your files, use OneDrive for example to store the most important documents.