You should be able to attach each screen in turn to your laptop and see if they work. If not - hard luck.
Talking of coincidences, my daughters desktop packed up a few weeks ago. She has a laptop so didn't really mind. She asked me if I wanted to salvage any bits, so I recovered the hard disk and screen and the rest went to the tip.
I brought them home and as I walked through the door my wife said "my screen's gone blank". And so it had, it was a moments work to attach the new screen.
