1. Which BIOS mode did you use ? Legacy BIOS mode or UEFI mode? Change to another BIOS mode and try.
2. Did you test in different computers? All of them have the same problem?
3. Did you test with different USB sticks? All of them have the same problem?
4. If you use Rufus to write an ISO file (e.g. Ubuntu) to the same USB, can it boot OK?
5. What's your computer Vendor/Model ?
2. Did you test in different computers? All of them have the same problem?
3. Did you test with different USB sticks? All of them have the same problem?
4. If you use Rufus to write an ISO file (e.g. Ubuntu) to the same USB, can it boot OK?
5. What's your computer Vendor/Model ?