When pressing caps lock windows flicker

Recently I was renaming a folder and I pressed Caps Lock. It was like pressing enter, it renamed the file. I tried again but still when i was pressing Caps Lock it was like pressing enter. Also when i press Caps Lock all windows flicker (go out of focus and back in focus).  Also when I press Caps Lock and I am on a full screen program/game typing something, it minimizes it and brings me to my desktop. If someone can give me a link to the keyboard drivers or have a tip to fix this, please do reply.

Thanks in advance,

John M.