Tom was having problems with his Dell laptop, so he installed a Logitech Playstaion keyboard-
“The Dell Latitude CPx line of laptop is notorious for having keyboards go bad and mine was no different. Not all the keys would stop working, just the 8, I and K keys. Various fixes have been posted and Ive tried them all but to no avail. Cleaning the contacts, removing parts of the metal keyboard tray that was supposedly shorting, etc. They would work for a few days then it would be back to typing with the onscreen keyboard. If I pounded my fist in just the right place I could get it to work but only until I moved the laptop again. This was getting irritating.” – Link.