Right-click your installer and select "Run as Administrator" to ensure it has the permissions to write to the System32 or SysWOW64 folders.
If you no longer have an NVIDIA card but the error persists, you need to manually purge the Registry. physx system software a newer or same version is present
If you are running an AMD Radeon or Intel Arc GPU but have an NVIDIA card from a previous build, PhysX does nothing for you. It consumes disk space and occasionally triggers this error when installing older games that check for it. Right-click your installer and select "Run as Administrator"
Your hand reaches for the mouse. You’re not sure if you’re the one moving it. The cursor hovers over OK. Below it, in letters too small to notice unless you’re looking for them: physx system software a newer or same version is present