Unfortunately, you might be stuck in no-man's land:
Premiere Pro CS4 may not run properly, if at all, on any newer version of Windows such as the current version 1909 build of Windows 10.
Secondly, CS4 was the very last version of Premiere Pro that's strictly 32-bit. As such, that software might not even be able to take full advantage of even a 13-year-old Core 2 Duo, let alone a modern i7. In fact, it might actually crash and/or error out much more frequently on newer systems. And this is because CS4 actually predates even Windows 7, let alone Windows 10 (having been released when the newest version of Windows was Windows Vista).
After all, who would want to actually run 11-year-old video editing software on a current-generation system anyway?
Randall