If your PC refuses to boot the USB, go into your BIOS settings and Disable Secure Boot . Is it safe?
If you are using an , you must check "Skip A11 BPR check" (Note: you will have to disable your passcode on these specific devices). checkn1x106amd64iso full
Comprehensive Guide to checkn1x 1.0.6 (amd64): The Ultimate Jailbreak ISO If your PC refuses to boot the USB,