Wrong reinstallation on inspiron 15R 5537, reinstalled win 10 Legacy mode

When I reinstalled win 10 using USB on Dell Inspiron 15R 5537, I changed secure boot to Disabled, and changed  bootlist option to legacy in BIOS.

After reinstallation, I found an error:

PXE-MOF: EXITING PXE ROM

How may I reinstall win 10 in UEFI mode? Now the system is legacy mode. I don't know how to set boot UEFI for USB priority. 

Thank you for your help.