I have a Dell optiplex 150 windows XP operating system. I get the dell logo screen fully loaded and that's as far as I get. I can access the setup screen. I opened the CPU in setup and it tells me that the CD Rom Drive is not installed and the hard disk drive is not installed and it doesn't say that the diskette drive is not installed. I don't have bootable floppy disk so what can I do. I'm not real tech savy but pretty familiar with computer. I know enough to be dangerous.