The keyboard of my computer doesn't work

**** apple community, i have a very serius problem with my macbook.
Today, i iniciated my computer to start working as usual, but i discovered that my computer do not recognize the keyboard or the trackapd that are attached to it. These are not external devices, they are built in my computer. Also, my macbook tells me that she can not find a bluetooth keyboard/mouse. My Macbook is normal macbook model mid 2009, with OS X (Lion) 10.7.5.
Does anybody know how to fix this?
Thank you for your attention.

So who you're talking to here is a peer to peer network of Apple users.
That said if your keyboard was failing, the power button is integrated into the circuit of the keyboard itself. So it wouldn't be surprising that the power button circuit would fail as well over time.
Normally a repair depot will replace the entire upper case and that's what's probably so expensive. However your Apple store should be able to preform a "Depot Repair" which would be a flat $300.
It is possible to buy a new keyboard for around $30 (Price for a 2011 13".) but the replacement is massively labor intensive. Everything has to come out of the MBP, the keyboard back light has to be carefully peeled away. There are over 80 #0000 Phillips screws that have to come out, the new keyboard carefully fitted and 80 screws put back.
Don't hold me to the 80 screws, I did try to count them but gave up and the count appears different depending on the keyboard.
I've done 3 so far!

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