my laptop ASUS SonicMaster is not booting from a bootable USB

[arnau vivet]

I'd say I'm doing everything good in the BIOS

-I've goot my bootable USB with parrot security 3.0 64 bites on my 64 bytes laptop
-I've enabled "launch CSM"
-I've changed the boot order priority to my Toshiba pen drive 16GB and I've also tryed whit a KingstonDT108
-I've tryed with the file systems: NTFS and FAT32

And after saving and quiting the BIOS it apears me the following message: http://

Sorry, the first part is in spanish but it means-->

"It didn't find an operative system. Try desconecting any unity connected without the operative system. press a key to restart."

Please if you know how to do it but you are not sure just write a list with all the possible answers

I need your help as son as possible, I hope that is the right post, it's my first question...

Thanks so much

PD: sorry for my gramatical mistakes I'm from Spain

 

[webworkings]

The USB you are using, was the software just copied onto it, or was it actually burned onto it? I ask because copied versions really don't work.