Save yourself the headache. Dust off the old CD for the memories, but download a modern free editor for actual work.
Assuming you have a legitimate copy (or an ISO backup of your purchased CD), here is how to force it onto Windows 10 32-bit:
: Right-click the setup.exe file and select Run as Administrator to ensure the installer has the necessary permissions to write system files.
Key Features That Make Photoshop 7.0 Better for Low-Spec PCs
Photoshop 7.0 was built for older systems but can often run on modern versions of Windows with some adjustments: