At the very least I would recreate the boot usb drive. You can also check the hash on the ISO and compare it from where you downloaded. If they don't match then there is a problem with the ISO and it will need to be downloaded again.
At the very least I would recreate the boot usb drive. You can also check the hash on the ISO and compare it from where you downloaded. If they don't match then there is a problem with the ISO and it will need to be downloaded again.