From what I remember this worked for me:Could this happens also when the system is turned off ?
Nice Idea to Try.did anyone try if g_mass_storage works better than g_file_storage yet? maybe it's more compatible and will work with powergods bios?
modprobe g_file_storage file=file.iso stall=0 removable=1 cdrom=1
sudo rmmod g_cdc
sudo modprobe g_file_storage file=/media/fat32/zorinOS.iso stall=0 removable=1
Now you can add that Command in that way to your PND and maybe ask before Drive Emulating:
Do you whish to boot from this? Then you can use my Command...
...or..
Do you whish to emulate this Iso as Cd/DvdRom? ..then you can use the older Command