If you disable it you can activate UEFI and Legacy boot options so you can boot to both.
If you reboot into the BIOS it will show a "Windows Boot Manager" as the only boot option so long as Secure Boot is enabled. On any OEM based laptop/desktop Secure Boot will be enabled which has Windows take over the boot management. Now type "active" and exit the command prompt. If it's not active, start a command prompt as administrator and type "diskpart" Use the command "list disk" to determine the disk number of the flash drive, then "select disk X" where X is the disk number assigned to the flash drive. The description on the flash drive should include the word "active." To check that last part, go to disk management with the flash drive plugged in. It should be formatted to FAT32, have an exact copy of the disk image and it needs to be bootable. As to the flash drive, make sure you prepared it properly. Booting from USB DVD drives isn't completely reliable in my experience. That shouldn't be needed for a proper 8/8.1/10 installer since the install media for 8 and up have secure boot keys and support UEFI. It actually stops a lot of attacks and malware. Secure Boot lets Windows control the boot process and not allow any unsigned processes from loading during boot. It is not that it is "harder" to install your own OS, you just need to disable Secure Boot and enable Legacy booting in the BIOS. Stuck where to go from here, would really appreciate any suggestions! Having no such luck on this machine though! An old Windows 8 laptop I had proved a little problematic to boot from disc but it worked in the end. I know since Windows 8 it's become harder to install your own OS. I've tried going into the UEFI, changed the boot order, and disabled Secure Boot (don't really know what that does), all to no avail. And it's occurring with both my bootable KillDisk and my bootable Windows 7 disc. I even tried making a bootable USB and booting from that but have encountered the same problem. I've tried selecting the USB CD Drive, and the Lenovo logo pops up, it hangs for a bit, the disc spins for a bit, then it returns to normal Windows 10. I've gone into the Advanced Boot Settings in Windows 10 where one can select a device to boot from. I cannot for the life of me figure out how to get it to boot from CD/USB.
I usually run KillDisk, wipe all the drives, then install a fresh Windows 7. I have a bootable KillDisk CD and a Windows 7 CD, and a USB CD Drive, all of which I've used many times. The amount of bloatware is rather annoying so I wanted to do what I've always done on previous laptops or PCs of mine. I've just bought a Lenovo Yoga 500 15.6" and love the feel and look of it, but I've encountered a problem.
Thanks for all your advice on choosing a laptop last week.
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