How can I fix my keyboard?

I was streaming some content off my netbook yesterday, during which time I removed a couple of keys to remove some debris. I did not turn off my keyboard or change my settings, no sticky keys etc.

It ended that I could not use my entire keyboard, I tried restarting my computer and put the onscreen keyboard on in the meantime. However this is very inconvenient. And I did try to clear and restart my keyboard settings but to no avail.

Is there a way to fix this?