Hello,
This is a quick script I threw together to remove the Razer Game Manager (& Service) from my computer.
It deletes the folder & files, and removes the registry entries.
It then patches the registry key dependency baked in to Razer Synapse.
*** IT THEN WILL RESTART THE SYSTEM! ***
This program requires being run as administrator, and is supposed to trigger a UAC prompt ("run as administrator") when launched.

Code is simple, commented, and decently readable, feel free to tweak it on your own, or suggest changes here!
Excuse the dumb parody name, as I forgot Razer already had a product called Razer Cortex.
-fado

*** If Synapse runs but the window does not "open", try opening Razer Central Service first from the tray in the Windows task bar ***