Advanced users can modify %APPDATA%\Razer\Synapse3\DeviceProfiles\ JSON files. Profiles created on Windows 10 can be copied to Windows 7 (same Synapse 3 version required). This allows macro configuration without GUI, but requires reverse-engineering.
Most Razer peripherals have .
Note: This works for mice like the Razer Naga Pro and keyboards like the Huntsman Mini, but not for headsets (which require software EQ) or devices without onboard memory. razer synapse 3 windows 7
Also check "Run this program as an administrator". provides step-by-step workarounds
This article explains the compatibility limits of Razer Synapse 3 on Windows 7, provides step-by-step workarounds, and lists alternative software options. The Core Compatibility Issue razer synapse 3 windows 7