Obviously you have a finger print reader on the laptop.
I know you can use it to log into windows.
If you installed the driver, and the software app for it. it should work.
In windows 7 click on the start pearl, and in the search box at the bottom type Toshiba.
See what comes up if it is listed or shown. Did you also choose the exact model number revision of the laptop, because there are alot of 100 M versions.