Getting "BOOTMRG Missing" when trying to boot from a USB.

set276

Honorable
Mar 20, 2013
18
0
10,510
I've tried manually prepping the USB using multiple methods I've found online, and more recently I've tried using the Windows 7 USB DVD Download tool to create a bootable USB. Every time I try I get a BootMRG missing error.
 

set276

Honorable
Mar 20, 2013
18
0
10,510


As I said, I'm using the Windows 7 USB DVD Download tool to create a bootable USB.
I have the Z77A-G45 MSI mobo, and it does have UEFI.