I did some research on it:
it's a really hard thing to hack into a secured system (especially by a fingerprint).
I thought it might be possible to just screw open the laptopcase and remove the fingerprint hardware, but even then I don't think Windows will let you in (without the identification).
A system always has it's vulnerabilities, but chances here are almost nihil. Someone needs to be really high-skilled to try and hack the system (if it's possible to do that, at least).
If one would hack into a system, it doesn't need the fingerprint file to get to your data. If you store your personal information on your computer, it'll always be possible to find it (which is, as I said before, not done by just anyone).
What you could use are private browsers, which should not leave any traces. Next to that, clean up your disks (include all the hidden areas, of course) which might contain any of your information.
Also, take a look at the quality of the fingerprint reader. There are cheap ones on the market, but higher-quality too.
Just remember: a system is always vulnerable. Even if not hackable, external factors (such as human beings) might hold the key to the system. But still, chances are really small for just you to be picked out and get hacked.
I hope I helped you a bit here!