key of microsoft office 2010 professional plus

key of microsoft office 2010 professional plus

by using the command in command prompt-I am receiving an error like
this-there is no file extension in-"c:\Program Files..
Please help..actually my problem is i entered some key from internet in
order to activate microsoft office professional plus 2010 in my windows 7
64 bit system,now i am receiving error when i open ms office -'microsoft
office professional plus 2010 cannot verify the license for this
product.you should repair the office program by using control panel', now
what should i do? Also i dont know the original key of microsoft
office,office came installed on my laptop