Windows 11 comes with Secure Boot enabled by default, but if for some reason your PC has it turned off, here's how to enable it.

Secure Boot is a setting that makes sure only official software runs on your PC, and it needs to be enabled for Windows 11 to work. Here's how to enable it.

This post will help you if the Master Boot Record writes on the wrong drive when trying to boot from a device. You need to repair BCD/MBR.

Windows: Dual (or triple or quadruple) booters know how annoying it is to wait around for the boot manager when rebooting. Free system tray utility iReboot lets you pick your OS as you restart, so ...

What confuses me is precisely how the Windows Boot Manager interacts with firmware-level Secure Boot. It doesn't sound like they're cycling vendor keys, so how would e.g. DVD's fail to boot?

If you suspect that a drive in your PC has called it quits, an easy way to find out for sure is to look at the BIOS or UEFI.

Event ID 1799 is the event logged when a boot manager signed by the Windows UEFI CA 2023 certificate (the latest and most secure) runs on startup.