I want to use windows 7 on my windows 10 pc. I already shrunk my volume and burnt windows 7 iso with a cd. I know the disk is good because it worked creating a windows 7 virtual machine. However when I try to boot from my windows 7 disk I can only get so far. My pc goes from press any key to boot from cd etc. I click space bar and see windows is installing files. That goes to windows is starting and back to press any key to boot from cd. I heard something about you have to enable legacy bios mode and disable security boot. But I can't figure out how to do that in my asus bios.