Keybored is stuck on Stickey Keys

Hello,
For about a week or so my key bored hasn't been letting use certain letters and i found out that it was sticky keys doing that so i found out how to shut it off i first did press ( BOTH) Shift keys at the same time for 7 seconds and that didnt work so then i went to Accessility Options and i turned it off and it still wont shut off it i wills top for lk 5 minutes then come back so i always have to reboot my comp but every time i go back to change the setting it show that it is turned off
SOME ONE PLEASE HELP ME !!!!!!!!!!!!!!!!
:(