Keyboards

If you have read any of my missives and of course hardly any of you have, you may have noticed I have moaned about my keyboard?
I have a Dell Inspiron laptop( 2 to 3 years old), several of the keys have come off and of course sods law dictates they are keys you use more than most, E, R and L. I have struggled without the key buttons for some time, just pressing the nub underneath. Not ideal! I tried a a very rubber plug in keyboard but found to my frustration not all the keys worked. So I abandoned that idea. Recently I have been working from home and using my laptop much more . So I finally resolved to fix this issue. I bought a replacement keyboard from Amazon, it arrived today and was only a fiver, plus shipping.
Eventually with the help of Youtube, I fitted it, not actually that difficult, booted up and low and behold the laptop sprang in to action, overcoming my first fear. Try the keyboard I did, oh dear, not a single key typed the legend printed on it.............
After a number of refits, including putting the original back on to make sure it was the keyboard and not my fitting skills, I gave up on the new keyboard and whilst the laptop was apart, out of curiosity, tried to re-fit the missing keys. Well you already ahead of me I am sure. Yes I fixed the keys back on the original and hey presto typing normally once more (well the R is still a bit dodgy but better than before!) I nicked one key from the new keyboard, but only one!
What is the moral of this story, frankly I don't know, persistence pays perhaps or even a fool gets there eventually!!!!

P.S. I hasten to add that I am not the worlds greatest typist anyway!