Reboot and Select proper Boot Device error

  • | 139 points

    I keep getting the error

    "Reboot and select a proper Boot Device

    or insert Boot Media in selected Boot Device and press a key"

    I'm trying to install windows 10 from a usb(using MediaCreationTool). In the BIOS the correct usb is selected for the primary boot #1, I save changes and reboot, but just constantly get this error. The two other hard drives, GPU, and RAM are being read as well.


    CPU: i7-8700K

    MB: MSI Z390 Gaming Plus

    GPU: evga RTX 2080

    Case: Corsair 275R Airflow

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