Toshiba Satellite wont boot from USB to OS install

could you try to change a setting in the BIOS. Enter to the BIOS and change "advanced- system configuration -boot mode" to CSM. Sure, that now you have UEFI.

After this change, you could boot from USB.

Good Luck

Hey man, your solution worked like a charm:
1st Disabled Secure Boot
2nd Change boot configuration from UEFI to CMS

thank you