Secure Boot or Microsoft Secure Boot is a feature first introduced with Windows 8 and also used with Windows 10 that relies on the UEFI Secure Boot to help protect a computer from malware and rootkits from installing or booting when a computer starts. Computers that come with Windows 8 or Windows 10 have Secure Boot enabled by default and will prevent any changes to the boot settings or firmware unless it is disabled.
Note: Although Secure Boot can improve the security of a computer it can also make it difficult to install other operating systems like Linux and use other third-party disk tools used during the boot. If you are having trouble installing or running any software that has anything to do with the boot it may be caused by Secure Boot.
How to disable Secure Boot
Secure Boot can be disabled on a computer by entering the BIOS Setup and entering the boot section.