I have a Old Acer Travelmate 604TER laptop and I updated it and Put on Windows XP , however now some keys are not working , would this be a keyboard Driver problem or something else , the computer says I have a Standard 101/102-key or microsoft Natural PS/2 keyboard ( if need new driver where can I get one ) any suggestions would be great thanks Mark
Its probably that you're keys aren't making full contact to send the signal. Try taking the keys off cleaning it.
with most (or all) keyboards you can lever out a single key with a small screwdriver (but take a photo of where each key goes, or make a note of the location) then to replace them just push them back into place (you'll here a click when you've pushed enough)