My Acer keyboard is repeating all keys. Whatever I type repeats multiple times (i.e. 3 or more of the same letter) depending on how quickly I hit the key. Doing this in all programs. No spills. An external USB keyboard works fine. I reset all software, no effect. I reseated keyboard ribbon cable...no effect. I replaced keyboard...no effect. Any suggestions? Do I need a new motherboard? Note: Laptop is 14 months old (12 month warranty). Please help. Thanks.
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