No, I haven't tried the steps you suggest, but the last time there were keyboard issues (when the computer was new, keystrokes would sometimes repeat continually until I unplugged the usb), it was cleared by an operating system update. The programmes I am using currently are back and forth between Word, iTunes and Excel (I am typing a transcription that has been provided as wave files). Also, in websites, such as this one, when I am logging in: the first keystroke does not register and has to be reentered. Weird and annoying. Thanks for your suggestions. I'll try them when I am not madly trying to meet this deadline. E.