Windows 10: "Reboot and select proper boot device" issue

  1.    04 Mar 2016 #1

    "Reboot and select proper boot device" issue

    Hello guys!

    When turning on my computer today, I had to face a BSOD with the error name being "System Thread Exception not Handled", which prevented me from launching Windows 10 in either way. So I rebooted my computer on my Linux Mint partition in order to look on the internet the solution to this error. I then created a USB bootable with Windows 10, so I can access to the troubleshoot kits. However, when I launched my computer again on my USB key, I found myself in front of a black screen with words saying "Reboot and select proper boot device".

    Things get quite weird from now, because when I try to boot from my SSD where Windows 10 is installed, I no more have the previous BSOD, but always and always this black screen with the same message. I do not know how to do now in order to access to Windows 10 again, and that's why I'm begging you now to give me some advice for my situation.

    Unfortunately, being unable to access to Windows 10, I can't give you a DM Log Collector. I hope it will still be okay.
      My ComputerSystem Spec

  2. axe0's Avatar
    Posts : 13,707
    Windows 10 Pro
       05 Mar 2016 #2

    Please check in your BIOS what the boot order is, prefered via a photo
    How to upload files
      My ComputersSystem Spec

  3.    05 Mar 2016 #3

    Here is the picture showing my boot order

    The Corsair Force 3 SSD is the one Windows 10 is installed in; the UEFI one is my Linux Mint partition and the last one is the CD Reader.
      My ComputerSystem Spec

  4. axe0's Avatar
    Posts : 13,707
    Windows 10 Pro
       05 Mar 2016 #4

    Have you booted at least 1 time earlier from the USB you used without any problems (is it bootable)?
      My ComputersSystem Spec


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