If you set the hard drive password yourself and forgot it, you out of luck. I don?t know if you would be able to recover it. After a quick search on Google I found a utility called A-FF Repair Station. They support a lot of drives and license for 1 recovery will cost you about $50. I have never tried this software myself.
If you didn?t set the hard drive password and the laptop still asking for it on start up, then I have a suggestion. Check the version of BIOS installed on your laptop. Three wil be some fix in the latest version like: ?Prevented the message asking for HDD password when there is a problem with the HDD?. In other words, if there is a problem with your hard drive, the laptop might ask you about the hard drive password even if you didn?t set it up. Go to Toshiba tech support website, update the BIOS on your laptop and see if you can bypass the HDD password message.
According to the BIOS fix in v.1.50, the HDD password message might indicate that you have a bad hard drive. If after the BIOS update you can bypass the hard drive password message and access the data, I would recommend back it up as soon as possible.