Hi,
Sorry i didn't follow your steps in order. I actually ran the disinfector first. After running the disinfector the usb worked fine.
It seems as though my usb is permanently fine now, however if i plug in other usb's that haven't been inside my computer before, they get affected immediately... as if my hdd is the one that is infected.
Within the contents of my autorun file was this:
[AutoRun]
open=oxbvpen.exe
shellexecute=oxbvpen.exe
shell\Auto\command=oxbvpen.exe
Thanks!