I have a Dell Inspiron 700M which has recently had the optical drive replaced (twice) the motherboard replaced (twice)and the keyboard replaced (twice). I've also reformatted the hard drive twice in the last 4 or 5 months. The USB ports now work fine, as does the optical drive (original problems). However as I type (on the laptop keyboard), the cursor periodically jumps to different lines, back and forth, and sometimes repeats keystrokes. I've even had it switch keys (y is z and vice versa) although that has not happened in a while. Any idea what is going on?
The Microsoft comfort curve 2000 keyboard is better although I think I have had some irregularities with that as well. Thanks!