Ahh, interrupt 80! It's trying to tell you that the BIOS cannot find the 512 byte signature on any disks, which preceeds the operating system's boot tracks (in a basic sense!).

This means:
<OL TYPE=A>

[*]There is a floppy disk in the drive, which does not contain any boot data - either it is blank, or contains some raw data - but not any bootable data,

[*]The BIOS has been reconfigured, and does not have the hard disk drive setup correctly (could be many things causing this),

[*]The hard disk drive has a corrupted boot sector,

[*]The hard disk drive has been formatted,

[*]The hard disk drive's communication cable has been taken loose, or jumpers have been mis configured,
or

[*]Hard disk failure.
</OL>

Try to boot the machine using a floppy disk. Make an "Emergency Startup Disk" from a known working machine, then use it to start up the non booting machine.
If you are successful, it will boot you to a DOS screen, with the command prompt logged to the floppy drive (typically drive A, so it will look like A:\> ).Try to log onto the hard disk drive by typing in the following command:
C:\
then press the enter key. If that works, the command prompt will now show " C:\> ", which means at least DOS sees the drive and can attempt to access directories on it. If DOS cannot access drive C:, it will come up with an error, which means anything from a blank/formatted disk, to a non functioning drive.

If you are successful with logging to a "C Prompt", type in this command:

DIR /P
then press the enter key. This will display the directories on the disk, one "page" at a time. press the spacebar to "roll down" the directory list, until you come to the end of it.

If you can get this far, things aren't too bad, and you can salvage the machine + data without too many hassles
(hopefully??? [Linked Image])

Let us know how things turn out.

Scott35

p.s. Trivia Time!!!

Q: What was the original function of IRQ 80, and what makes that function such an important and key item for a PC type machine?

First 10 callers with the correct answer win a free Oven Mitt! [Linked Image]

Scott35

Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!