satellite s55 keyboard acting up

i have a toshiba satellite s 55 b5280 and everytime i try to type something it will go back a few words and i have to retype it. and when i hit the space bar or enter bar sometimes it will delete what i have typed. i think my keyboard is hijacked. i also found this sm bus controller is not installed. how do i fix this. this is really becoming a PINA.

 

You need to install the SMBus Controller driver. The easiest is to use the free version of DriverEasy. The limitation is you can only download one driver at a time. Don't click on register.

http://www.majorgeeks.com/files/details/drivereasy.html

 

i downloaded this problean the keyboard issue has gotten worse i also still have the sm bus controlmler not installed