Alternative idea for about $25 is to buy a regular sized keyboard with a USB connector and just plug it into the back of your laptop.
Much easier for general typing too.
I bought one of those Monday at Walmart ( about $12). It didn't fix my problem, it doesn't override the laptop's keyboard, they both work.
The problem is this key sticks, //////////////////////////////////////////
I can get it to stop for awhile by pounding that key a number of times. I've taken that key off, and blown it out with compressed air. Backspace is also funky, it works, but you have to press it fairly hard.