Try this
1. Power on the system, then go to BIOS Setup by pressing F2 and go to "General>Boot Sequence > Boot List Option".
2. Change "UEFI" to "Legacy" of Boot List Option.
3. Click "Apply","Exit" to save changes and reboot system.
Or
1. Power on the system, then go to BIOS Setup by pressing F2 and go to "General > Boot Sequence > Boot List Option".
2. Change "Legacy" to "UEFI" of Boot List Option.
3. Click "Apply", "Exit" to save changes and reboot system.
https://www.dell.com/community/Inspiron ... -p/5971157