just updated my iphone 4s to 7.0.4, and now phone wont unlock,.

i just up dated my iphone 4s to 7.0.4 and now the phone wont unlock, when i press any button or part of the screen Siri talks telling me what the button does but the button will not activate.

when i plug in to itunes to restore it askes me to turn off "find my iphone" of course i cant do this as i cant open the phone.

when i try turning phone off Siri tells me its a off button but it wont activate.

when i do a "cold" restart (power/home button pressed together) phone will turn back on with same problem.

please help.

Thank