Most laptops have a Function key that will change letters to numbers so you can use them like a 10-key. Look at the keys - like the J, K, L, M, U, I, O, etc. Do they have little numbers on them in addition to the letters? If so, find the F-key at the top of the keyboard that has an icon that looks like a 10-key pad or calculator. Hold the FN key down and press that F-key. That should revert you back to all letters.