Can’t open Access database from disk

I have a database saved on a floppy disk.

I recently had Access software downloaded
onto my home computer. (350 MHZ GIG hard
drive, 256 RAM with Windows 98)

My computer opened the Access-database
from the floppy disk at the lab where I had
Access installed.

When I got the computer home it would not
open the database. It says ?Disk or network
error (Error 3043).

It does open the disk, because I have a
picture saved on the same floppy and it will
open.

I have another disk from a class I took in
Access. I can open that at home.

Why will it not open the database now. . . .
when it did open it at the lab?