I have a Compaq nc8430 business laptop and installed the drivers for an
ergonomic Microsoft keyboard. Since last week, I no longer able to use any of
the Function keys. I tried several applications and it's the same on all of
them. The porblem is experienced in both, the internal and external keyboard.

I removed the Microsoft keyboard based on a knowledge based articled that
referenced a possible conflict. In addition, I uninstalled the external
keyboard drivers from my computer. However, I'm still not able to get the
function keys to work.

Technical Info: Windows XP Pro with Service Pack 2

I really depend on the F4 Function Key for many of my tasks within MS Excel.
Any ideas?