It's a desktop pc that may have been virused; not sure. During POST I get two followed by four "beeps". I don't think the system ever "checks" the floppy drive. Everything was seated inside and I tried to boot from a Win2K startup disk (since a regular boot only elicits "inaccessible_boot_device"). All I get is: "Invalid Boot Diskette". I've replaced the HD with another that I know is working with Win98 and it boots right up. NOTHING I DO WITH THE ORIGINAL HD WORKS. I'd throw it out the window, but they don't open. Any clues?????