Headset Razr chroma 7.1 not working
First, this is assuming that you have your headset properly configured and are using Razer’s software.
There is a problem with Razer’s configuration software, Synapse. If I remember correctly, besides simply uninstalling Synapse, one of the fixes was to open your playback devices (right click audio tray icon), open the device’s properties, select the enhancements tab and either repair/restore defaults/disable all enhancements.
The other solution is to modify the registry, but I think you have to do it constantly. It was posted about here a little while ago.