This is the first time I encounter this issue. I can't boot from USB drive on a Sony Vaio PCG-21313M. I set the external device as first choice and enabled it. Also I tested the usb (Windows 7) on other laptops and it boots fine. The computer doesn't boot properly not even in safe mode.
Windows – Unable to boot from USB on Sony Vaio
bootusbwindows 7
Best Answer
I have experiences similar issue, then I found Boot mode setting in BIOS. It was set on
UEFI
and I changed it toLegacy
and it works! Hope it will help you.