F8 at boot and revert to Last Known Good config.

>>>Hi everybody,
>>>
>>>Twice our laptop experienced some weird problem - half of the letters on the keyboard became numbers. Full virus scan and cleaning got rid of the problem, but I'm not sure what causes it and how to prevent it.
>>>
>>>Did you hear about something like that?
>>
>>It is happening to me regularly if I use an extrnal keyboard with numlock set on -
>>I have large keyboards and the logitech rodents I am addicted to at most of my regular work places.
>>
>>Sometimes on waking up from standby or booting up after a session with external KB the laptop "numlock"
>>feature is set on, giving me numerics on the right half of the kaptop keyboard.
>>
>>With my laptop I only have to press the "function key" + "insert". Dunno if it happens with all keyboards or only the old non-USB ones I have plenty of...
>>
>>HTH
>>
>>thomas
>
>Thomas,
>
>Right now the laptop is not even booting up. We installed avast over several other spyware programs and could it be a conflict between them?