Did you install Windows on an M.2 SSD? Do you also have a 2.5" HDD or SSD in the system? If the answer to both is yes then you should install Windows after you disconnect the HDD. Then boot Windows before you reconnect the HDD. Also disable Secureboot and make sure AHCI is enabled (note changing from RAID to AHCI will make the drive unbootable and you will have to reinstall Windows). Make sure that Windows Boot Manager is first in the boot list in the BIOS.
The following forum post is a great source of further information.
JOcean
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Posted January 7th, 2019 08:00
Did you install Windows on an M.2 SSD? Do you also have a 2.5" HDD or SSD in the system? If the answer to both is yes then you should install Windows after you disconnect the HDD. Then boot Windows before you reconnect the HDD. Also disable Secureboot and make sure AHCI is enabled (note changing from RAID to AHCI will make the drive unbootable and you will have to reinstall Windows). Make sure that Windows Boot Manager is first in the boot list in the BIOS.
The following forum post is a great source of further information.
https://www.dell.com/community/Laptops-General-Read-Only/Dell-Inspiron-13-No-bootable-device-found/m-p/5140389
I am not a Dell employee...I am forum volunteer
Serious work on an E5430 and constantly building and working on an i5-6500 Desktop