My shift button does not work correctly

[Kwikshare]

if I press the left shift button it types a "1 or !" if I press the right shift button it types ''w or W'' please help me

 

[Bobbyrae]

Do all other keys work correctly? What causes the "1" versus the "!" to show up? Or is it just random?

Are you using a standard keyboard on a current Windows system?