To the people suggesting a secure delete... why? Honestly, if you think that shit is necessary, you should know full well that this decision is something for management/HR to decide. Not only that, but the use of that software, if discovered by some member of IT or otherwise could implicate the deleter as trying to cover their tracks for some sort of inappropriate behavior with a company laptop.
Hand the hardware over for someone else to make a decision who is in a position to put the company's perspective as the most important objective. Take yourself out of the moral dilemma and let a manager decide what to do with it.
DO NOT hand it over to IT. Allow HR to handle the situation, and they will involve IT as necessary. Guyver's suggestion to involve multiple parties is also likely a good solution, as you cover your bases of reporting it to a friend who may try to cover the other guy. But deleting it, whether with a secure delete program or otherwise, makes it look like YOU are trying to cover something up. That'd be the dumbest thing you can do, IMO.