laptop wont type the letter ‘c’ then infinite ‘c’s’ appear with no contact

Iturned on my laptop, and was writing an email and the ‘c’ key on my keyboard would not work.

However when continuing to type ‘c’s’ would just appear in the middle of worked and if fast typing was stopped or slowed down ‘c’s’ would just appear like this ‘ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc’ without me even touching the keyboard, and wouldn’t stop appearing until I pressed delete.

Can any one help me in finding whats going on here? I have a toshiba satellite pro laptop.