Asus laptop keyboard is acting strange?

im using a asus windows7 laptop. every time i type on my Laptop Keyboard, for some reason my typing can end up at the front of the sentence or front of the second word and its screwing up my sentences.i have to use my mouse or arrow keys to adjust this. i just did a system recovery on this laptop which was a fresh install. please help myAsus Laptop Keyboard! I decide to buy a new laptop keyboard like Dell Laptop Keyboard or Compaq Laptop Keyboard, any sugestions?