Just installed Windows 7. Runs like a charm, BUT when I reboot for the first time it comes back to the login screen with no keyboard. The keyboard lights are on, just wont detect it. Mouse works fine. Can login to the system with onscreen keyboard and everything else works fine. Tried new keyboards and ports. As soon as I unplug it and replug there are no lights on the keyboard at all. Tried uninstalling keyboard drivers
and reinstalling but still no luck. Did 2 fresh installs of OS and same thing happens everytime. The keyboard works fine after the setup is complete, but once I reboot, no keyboard. Dell Tech support told me Windows 7 is not compatible with some USB keyboards. I think that is BS. Went out and bought a new Microsoft wireless keyboard that is made for Windows 7, still no dice.
I then installed Windows 7 32 bit, now everything works fine. Can reboot and keyboard works fine. This is OK for now, but I would really like to use all of my 4GB of RAM in 64 bit. I have a Intel Core 2 Quad, so 64 bit should work.