Keyboard has gone haywire - Help!

Hi everybody

I have been trying to fix this problem for the past few days and couldn't
find much on the WWW that could help - so I'm resorting to posting a question
online as it seems that the problem is unique.

Few days ago, I decided to clean my laptop's keyboard by disinfecting them.
I basically used an antibacterial wipe tissue, but because I was rubbing each
key one by one, it must have caused the system to go haywire.

Now, everytime I press 'm', the number '0' comes up. Likewise:
u = 4
i = 5
o = 6

I don't know what to do - is there someone who could help me?