Keyboard not responding

[Bpd]

I have a Dell Laptop (Inspirion 15).
A few days ago, while typing, words would disappear and Id keep having to retype. I figured I should just turn it off and give it a break and restart.
I go to log on this morning and my keyboard wont type letters. My laptop is password protected, so I cant get into the control panel. I have restarted it. The numbers, both on the top and pad work, but no other keys do.
I went an got an external keyboard to get in and its the same thing! The laptop knows Im pressing a key, because it wakes up, but only the numbers show up.
Help!

 

[managed]

Hi and welcome to TSG.

Is this a Bios password, that you have to enter just after switching on ?

Please post the laptops service tag, it should be on the bottom of the laptop. That will tell us the exact model you have and help to find instructions for disconnecting the laptop's keyboard, which may be faulty, and disconnecting it could get the external keyboard to work properly.