Dell Latitude D830 Laptop Computer PC Notebook "letter vowel" Questions

I can not get letters, especially vowels, to always type out I can not get letters, especially vowels to always type out when I am trying to on my Dell D830 Latitude. I purged my machine and moved ...

...it is virus.but all scans are negative.sometimes I canot type anything.only vowels of french letter type comes up..if i let idle for a while sure it will happen.I have to start and switch off ...

vowel key (i.e., letter ''a, i, e'') the text in the whole document would be highlighted, or it would be locked up until you pressed the ''Esc'' key to get it to cleared. The program loaded fine and I