It is possible that some modules were left behind during the uninstallation process for your Razer Synapse. Make sure that these files are no longer on the computer. If they still exist and you are unable to delete them manually, contact Razer for help.
C:\Windows\System32\RzChromaSDK64.dll
C:\Windows\SysWOW64\RzChromaSDK.dll
C:\Windows\SysWOW64\RzAPIChromaSDK.dll