When your laptop keyboard gets bad as a result of external damage, breakage, or water damage, so you might have to change your laptop keyboard. I have seen so many people that have made attempts to personally change their laptop keyboard, but unknowningly to them, the end up damaging the new one, alone with other laptop components.
The laptop keyboard is a very delicate component, and it is necessary to be handled by an expert in that profession.
The cost of a new laptop keyboard is not expensive, with prices varying from $5-$60. Although, it is said that the higher the price of a component, the better and more quality it is. I have tried to disagree with so many times, because i have bought cheap laptop components, and they have served me so perfectly, just like the expensive one will.
At any rate, there are precautions necessary to put in mind, when using a laptop notebook, in order to avoid damaging your laptop keyboard. They include avoiding taking drinks near your laptop, avoiding eating crumb-like food need your laptop, because when the crumbs get under the laptop keys, they will cause malfunctions. There are others but an overall carefullness is required.