Laptop typing the letter "s" without a keyboard connected!

[Jorgis]

So my laptop recently started to type the letter "s". I thought that it was faulty hardware and i removed (physically disconnected) the keyboard. As i start the laptop after removing its keyboard the letter "s" keeps on being typed even tho there is no keyboard connected. It happens even in the boot menu. I removed BIOS battery and restarted it. For about 5 minutes it was ok than it started again. Any ideas?

 

[bailojustin]

Sounds like there might be a short in the keyboard built into the laptop under the s, maybe due to humidity or some type of liquid that keeps closing the connection completing the circuit typing s over and over. remove the s key and clean everything if still types the "s" key then im not sure, I would wait a few days with it off and turn it back on a little later and see if the problem persists

 

[Jorgis]

Sounds like there might be a short in the keyboard built into the laptop under the s, maybe due to humidity or some type of liquid that keeps closing the connection completing the circuit typing s over and over. remove the s key and clean everything if still types the "s" key then im not sure, I would wait a few days with it off and turn it back on a little later and see if the problem persists

Thank you for your answer.
The thing is that i removed the keyboard and turned it on without a keyboard, and still the letter "s" keeps being written.
NO KEYBOARD CONNECTED TO THE PC!!!