I had a system crash. The windows stop code was 0xc000021a. When the blue stop code screen would appear it would say it needs to reset then the computer would just shut down. This all happened when I was trying to recover to a prior system date and then the computer encountered an error during this process and shutdown. I could not start in safe mode to troubleshoot. My system is an Aurora R7. I had a windows boot disc but had not backed up anything so I had to do a fresh install. The problem is unless I disabled safe boot mode and enabled legacy boot the bios would not recognize the cd drive and I would not be able to boot from it. I also tried the windows media creation tool but even in Legacy mode my CPU would not recognize the USB drive even in legacy mode. I was able to reinstall windows 10 on my SSD from the CD but now I cannot boot if in safe boot mode and it will only boot in legacy mode because this is the only way I could get my computer to use the boot disc. Basically id like to have secure boot enabled tp prevent boot time viruses but I fear I cannot boot UEFI because I had to do the install in legacy mode. Can anyone help me sort this out?