I have an Asus vivotab note 8 M80TA that I'm trying to dual boot windows 10 and android 5.1.1. I downloaded the iso from android-x86.org and put it on my usb drive using rufus. I went into my tablet bios and disable secure boot and everything. But no matter which methods I use, I cannot get my tablet to boot from the usb! The bios boot options only show two options: Windows boot manager or disabled. Both options boot straight into windows. I also tried booting using the windows recovery, however there was no option to use a removable drive or usb in the windows recovery. some help please?