Solve : Period Key Doesn't Work, Even After Keyboard Replacement?

1.	Solve : Period Key Doesn't Work, Even After Keyboard Replacement?
Answer» I have an older laptop, and a couple months ago, the period key stopped WORKING. I think that is the only key, so I ordered a keyboard. I just replaced it, and it still doesn't work. How can that be?I switch out the hard drive in two of my computers, it worked FINE until I told it to reset the info. I did a diagnosis on the hard drive everything passed. once I leave the test screen it goes BLANK and nothing. I tried to use my restore USB drive but it doesn't see it. I changed the boot order to boot from the USB still nothing. Help I'm trying to get it set up for my grandson.I'm guessing that somehow, the keyboard port on the motherboard must have gone faulty, which is why the key doesn't work, even after a keyboard replacement. It's weird, that it's only ONE key, because usually when that happens, it affects a CLUSTER of keys. Thank you for your help.

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