  themackid  If you are not using RAID and as you don't have an internal floppy drive, enter the system setup, scroll down to drives, press Enter or + to expand the drive menu then down to "SATA Operation", press Enter. Change the SATA operation mode to "RAID Autodetect/ATA" press ESC to save and exit the BIOS.Then windows should install without a problem.Bev.
  Hi!   I was recently given a Dell Dimension 8400 with a 3.0ghz Pentium 4 ht, 2 DVD Drives, 80gb hd, 1gb ram but no floppy drive. I need to reinstall Xp, because it is running really slowly.   I have a Dell disc to reinstall XP Home Edition, but it says no hard drive when I try to install, because or Xp's lack of SATA drivers.   Is there like a setting in the bios I can change to fix this?   Thanks! 
Dimension 8400 XP install