Trying to boot windows 7 from usb on asus uefi bios yet it says bootmgr missing, ctrl alt delete to restart??

kristofp12

Reputable
Apr 25, 2015
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4,510
Just upgraded a new rig with a new cpu and motherboard, and I'm trying to install windows on a usb, i used a mac, and by using the bootcamp assistant i formatted the iso file onto my 8gb flash drive, and it is now fat32. I booted up the pc, set it to boot from the uefi usb, and the message bootmgr missing comes up. I also plugged the usb back into the mac and booted up from it, and it brought up the windows 7 install screen and everything, proving that the usb is indeed bootable. idk what to do, please help, i've tried reformatting the drive, and also used the unetbootin thing as well, but they all have the same result of bootmgr missing.