Macbook Pro - No Wi-Fi Hardware or Bluetooth

I have a late 2011 Macbook Pro 13".
I had it repaired after water spillage on the laptop. Got everything working and returned to me and then when I turn it on I get 'No Wi-Fi Hardware Installed' and No bluetooth now!
I just did a RAM reset, Hardware test nothing was wrong....
What could be the next steps? Replace the Bluetooth and Wi-Fi card?
Any other steps I can try and follow.
It's running the latest Maverick's operating system currently as well.
Any help, tips and advice would be great as I am going around in circles at the moment.

I have tried restarting the router, I have in fact attempted to connect to 3 different routers that I have always used at home, work, etc and all have this same issue. I am assuming this must be my actual computers problem and not necessarily the router...? I just attempted disabling the firewall but that did not work either. THank you for replying, if you have any other troubleshoot suggestions I would appreciate it as well.

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fluffy wrote:
"Share my Internet connection" wasn't checked. Also I forgot to mention but I've set the devices up multiple times, with no change in behavior.
It looks like all the "solutions" out there (change the batteries, zap the PRAM, etc.) are more just cargo-cult thinking that doesn't have much to do with the underlying problem, it's just that with such a low-repeatability issue that only comes up sporadically, of course rebooting your computer or zapping the PRAM will make the problem "temporarily go away" (just as waiting around and doing nothing will).
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Macbook Pro - No Wi-Fi Hardware or Bluetooth

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