vi editor in ubuntu cursor on top of character wont delete

I'm running ubuntu and the cursor in vi won't delete character before cursor. The cursor "white box" will jump on top of previous c开发者_高级运维haracter when I use the x command. then if I press x command again it will delete the second character while placing the previous character in its place. example:

ABC[] *[]represents cursor"white box"

I want to delete c vi does this when press command x once: AB[C] then command x again vi does this: A[C]

my question is this: How do I get a blank cursor "white box" because when I use the command L the cursor won't get of the character and move on its own to the right.

Thank you for any help you guys can give me.

I'm not sure I got what you mean, but I suspect you have CAPS LOCK on, so that x (delete character under cursor) becomes X (delete character preceding the cursor), which would explain why ABC becomes AC rather than AB.