Factory Rest my Dell Inspiron 5749

I have being trying to factory rest my Dell Inspiron 5749 laptop with no success, i downloaded Dell Backup and Recovery (DBAR) Application and installed it.

I ran the application and created a factory recovery media on a usb flash successfully.

I trayed to restore my laptop to the factory image without success and this note poped out (an error occured while selecting the system backup to restore).

I Left the flash memory attached to the laptop and restarted and pressing F12, entered the bios mode and selected boot from usb drive,the laptop buted from the flash drive and gived me the following error (IDS_ENVIRONMENT_INCOMPLETE) followed by another error (Restore7.exe-Application Error) followe by this text (The instructio at0x8fc1f43b referenced memory at 0x02ee6e80.The memory could not be read)

Note the system on my laptop is windows 10  64bit.

Any help