I have a recapped classic 2 mobo with an 80mb hard-drive. I plugged in the hard drive, turned the mac on and booted from the system 7 disk utilities floppy. Once the reformatting was done, I restarted the mac and installed system 7 on it. This all worked well and I played Oregon trail on it for a while, but after I turned off the computer a couple of times, the drive stopped showing up. When I power up the mac, I get the missing OS floppy icon, and when I boot from the Disk Utilities I don't see the drive on the desktop, or with the actual application. The drive sounds the same as it did when it was working. The mac came with a hard drive installed but it didn't recognize it either. What can I do to fix it?