laptop keyboard problem

[jimklus]

So this started happening about 2 days ago, some of the keys on my Asus X Series Keyboard do not react when I press them, most of the time I'll need to press it several times for it to register. The strange things that it's not the most used ones by any chance:
"s" is the only letter I've noticed bugging out, than I have 5, 6, 9 and 0 on the number row above letters and 3 and 7 on the numpad.
Yeah, I use s a lot, but way less then the rest of wasd, 5 I barely touch, maybe 3-5 times a fight, and the rest are barely ever used.
I've tried taking the keys out and cleaning around with no effect, and I have no idea what could of cause this random failure.