CD partition of 320GB External USB Drive - PX1267U-3G32 does not run

I have an 320GB external usb drive, which has been working perfectly.
There is a security partition that appears as a CD drive in My Computer and runs the password programme automatically when the drive is plugged in.
Having entered the password the external hard drive appears as a drive in My Computer.
This security programme has stopped running.
I have turned the drive on/off.
Tried it on a different machine.
Tried to 'Autoplay' the CD drive.
Double Clicked the CD drive only to be told to "insert a disk into drive F:"
Is there a way to bypass this partition and recover all my data from the hard drive?

Hello
Several times I saw how it works because a friend of mine has this external HDD. I do not have much experience with it but before you wait here for comments try to install REGEN software again. Maybe it will help. This software and CD Update Application you can find and download from Toshiba support page http://eu.computers.toshiba-europe.com
Check it under Options > Drive Devices.

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