What I was trying to say was that according to Adobe and Microsoft it should not run on either system. Some how you got lucky on one computer.
System requirements | Photoshop
If your hardware is capable you could try copying the program to a thumb drive off of the working system and removing APE from the non working system. Then installing APE from the thumb drive to the now clean computer (no APE). It might take what ever setting from the working system to the other computer when copied. That is a long stretch. I would disable your anti virus and firewall during this transfer.
Make sure when done you enable your anti virus and firewall again.
As a general rule it is not good to try and force a non compatible program on a Windows 7 computer. It will probably cause other problems.