Laptop keys acting weird [Closed]

Registration date
Sunday January 4, 2015
Last seen
January 4, 2015
Hey guys.
Something has happened to my laptop. It's a Dell Inspiron 5521 Series. It was working perfectly fine 1 week back. However, the last week i suddenly got a stickykey notification for which i said a NO as well as disable the option. The issue right now is that 3 keys on my keyboard are working abnormally :

1. Left Ctrl - "8"
2. Fn - "Page Down"
3. Right Ctrl - "*"

I am not at all able to use the Ctrl key on the keyboard. I have tried mapping keys, but no luck. Might be that I wouldn't gone the right way. I'll be glad if someone could help me sort this thing out.

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