This is because the inner layer of your Laptop's keyboard wires were damaged, the only way to fix this is to replace your Laptops keyboard either yourself or by bringing it into a repair center which is the preferred option, it is doable yourself but extremely hard and you will most likely break your laptop, the reason being is because your laptop's keyboard is most likely held in place by plastic pieces which you have to either melt off with a soldering gun or grind down with a grinder, both of which are tedious processes. If you aren't careful with the Soldering Iron you could melt other components of your laptop rendering it useless as well. However if you do attempt to fix it yourself there are guides on how to do so, there is no way to buy the plastic needed to solder the new keyboard back into place as it's only done in the factory where the laptop is made, I found a solution though being that you could grind the current pieces down to release the keyboard, replace the new keyboard and solder Black Nylon Zipties to the pieces you grinded down one at a time while holding the keyboard down firmly until the plastic cools into a solidified state. Obviously like I said this is extremely tedious and a 4-10 hour job depending on your skill level, you can buy replacement keyboards on Amazon for $60-100 but your best bet is to bring it to a repair shop if you're afraid you'll render your laptop useless on self repair.
