FF7 PC "Please insert game disk" but it's in there...

[standinginmotion]

Yes, I have done that, and still no good. That was to change the video directory so that the videos run from the PC and not the disk... I don't think that's what's causing the problem.

Changing the video directory won't change the Data Path.
Open regedit.
Navigate to Squaresoft, Inc.
And Final Fantasy VII.

Check "DataDrive" is set to the CD drive you are using.
If that is right and it still doesn't work, trying making images of each of the discs with ISOBuster, downloading DAEMON Tools and mounting the image to a virtual drive, then going back and changing "DataDrive" to the virtual drive letter.

Except I don't have a virtual drive, and the cost to get one would be about the same as buying the used PS version. I'm not saying I don't want the original PS version, but I got the PC version for free, and I want to see if I can get that to work.

And I have done all of the above (minus anything to do with the virtual drive part)

EDIT: Forgive me... I didn't know DAEMON tools was also a free virtual drive...