Keys on my keyboard don't work

Some of the keys on my laptop don't work. I did the apple hardware test and could not find anything wrong with it. I have followed the http://support.apple.com/kb/TS1381page and there was no change. I removed some of the keys and cleaned, still no change. However, the keyboard Viewer works. Not sure what to do, please help. Keys that don't work are: '9', 'o', 'l', '. ', up and down.

MacBook Pro, Mac OS X 10.11.3

Hello!

I did the last update for 10.11.4 last night and I have a MacBook Pro (retina, 13 inches, end of 2013), but I have similar problems, except that I got two letters instead of one for example: e is ew, s = ds & d = ds, 2 = 23 3 = 23, c = cx x = cx very frustrating! Also nothing has fixed this for me or the other!

Tags: Notebooks

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