Safe Device for Selling Software

Hi. I'm looking for selling a high value software but if I do it like usually it would spread in the market, so I can sell only one time.
The idea I had is making a closed device like a laptop where the software works, without network connection, without being able of putting it out of the laptop, if you remove the HD it deletes. Is that possible?

Make a serial key that comes with the software. You should of know that.

madacho said:

Make a serial key that comes with the software. You should of know that.

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Can't it be hacked? Because it's a DDoS software, pretty basic but important.

You could make an external software that checks for the computers specs so if the HDD is taken out it would compare the specs and if they aren't identical just self destruct.