A lot of people ask this and it theoretically could be done. However, in modern laptop design the keyboard is not separately replaceable. You have to replace the whole top cover which is an expensive part. Further, you have to completely disassemble the laptop, toss the old top cover and rebuild the laptop onto the new top cover. I have never had a report of someone actually going through with all that.
BIOS – Backlit Keyboard and other Advanced Options
This is one of those situations where the how-to document mentions that a particular feature might not be supported on every computer. The document does not offer an exact explanation because the document is not written for YOUR computer.
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