I'll save you the trouble of searching through the other 150 times this has been asked. The simple answer is for the small amount of Crypto you would be able to mine, it's just not worth it and you will very likely damage the laptop in the long run, which would negate the small amount coins you were able to mine. If you want a cheap rig, Goodwill or Craigslist has 100's of $50-$100 PC's that you can use for mining with a couple of cards. Way better and more effective than trying to mine with a laptop that isn't made to stay one 24/7, much less to mine with.