keyboard keys wrong functions

[tappet]

when I hit the left arrow key the cursor moves left but also creates a + when i hit the f key a norton internet security window opens up, if i hit the up key it turns numlock on or off. I don't know how these happened. I know the arrow keys have been wonky for a while but the f just started. this is extremely annoying. Pleas help

 

[Alabalcho]

Is this a laptop or desktop? Have you tried with external / another keyboard?

 

[tappet]

This is a laptop, I have not tried another keyboard