Using EasyBCD 2.3 (after the corrupted version was replaced), I created a boot menu on my usb disk composed of various ISO files. The machine is running in Legacy mode unsecure. When I attempt to boot from the USB, instead of a boot menu, the screen displays simply gibberish composed of all sorts of non-standard letters. When I push enter, then it says, "Selected boot device failed. Press any key to reboot the system". I tried to use "Reset BCD configuration" from "BCD Backup/Repair" and still get this problem. What else can I do?