I didn't realize that this "feature" existed in Windows 10 until recently (there was only one machine before that in my control that had Windows 10, and I don't use it for anything but testing). Now, with Fast Start, is there a reliable way to get to your BIOS/UEFI settings? Apparently not. If you restart your machine, at least some machines seem to skip over the BIOS stage. Now, with Fast Start, even if you shut your machine down some machines will skip over the BIOS stage. So how do you get to the BIOS or UEFI? You play roulette and hope that one of the times that you shut down, you will really shut down, or you hard reset it during startup (always a good idea!). Thanks for the "feature," Microsoft!