1.Erase your fingerprint drivers.(erasing any software you installed for the fingerprint)
2.go to Device manager - you'll find there Biometric something(my windows is in hebrew so i don't rememeber correctly how it's translated in eng) anyway remove the Biometric something, it might be found as Authen Tec Inc.
3. restart your laptop
4. when you go back to windows, windows will recognize that you have an uninstalled hardware and will start installing it, then use windows' Biometric device, you can search for it in Start search if you're using win 7/ Vista