Corrupted bootable drive / iso file. Download new copy of ISO file.
Try to reflash ISO file to bootable USB.
Two parts GPT - UEFI (non CSM) or MBR - Bios or UEFI. one of these will work.
tama sila lodi corrupted yung file ng os mo may 0kb file dyan or may kulang try mo format ulit ng flash drive if yung gamit mo then saka ka ulit mag ayos ng bootable na OS sa Fd mo gamit ka ng app meron nyan search mo sa net mas ok yun