Toshiba Satellite C855-S5350 keyboard types wrong characters

Hi all!I have the above named Toshiba laptop with keyboard problems. When typing, the keyboard will instead type another different character. Example, When I press "C", the computer will type "cd" and also brings up that menu for choosing second screen (PC screen only, duplicate........)When I press "escape", the computer will truly "escape" but will also type "q"When I press "d", again, "cd" is typed.When I press the space bar, space will be applied together with [Caps lock will type QqQqQq as much as I continue pressing it.J will type in "mj"M will also type "mj"S will type "xs" and also apply the Fn key for decreasing screen brightness (F2)V will type "v4"X will do same as 'S' above.Num 4 (top row) will type "v4" as in 'V' above.What I have tried,Connected an external keyboard - It worked fine.Booted with a linux live CD- typing problem is still there also.Please can someone let me know how I can solve this and what might have caused it? I'm afraid of having to replace the keyboard (as it smells so to me). Any workaround? Thanks. 

This appears to be a very common fault with the Satellite Laptops.  My C55-A5249 is just over a year old and has had excellent care then all of the sudden the keyboard stops functioning. Of coarse it didn't happen until after the warranty was up. But I called Tech support anyway. They walk me through some issues that they could not resolve and sent me on to Another repair department (Closed on weekends).  This left me time to play arround.  I was actually able to attach a wireless keyboard to the laptop and it worked just great. I am currently in the process of "Refreshing" (hold down the ShiftKey and click on Restart from the power options button) the laptop back to defaults by hold down the ShiftKey and click on Restart from the power options button.  This is a gigantic pain by the time you restore everything.  Did I mention: "I HATE WINDOWS 8.  Anyway.. I'll let you know what happens next.

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