Volume mixer becomes unresponsive when I change volume

I'm using a Logitech 35 headset on Windows 8.1 64-bit and all drivers are updated but when i want to adjust the volume, the volume mixer becomes unresponsive and stops working and my headset stops receiving sounds.

The G35 headsets I found, doing a search, are 7.1 surround sound headphones, USB connected and with a volume control in the headset cable. Is this what you have? If it is you should apparently be controlling the volume from the headset's volume control and not the PC???

Thanks for your response but I have fixed it by restoring my PC to a couple days earlier. I still never knew the source of the problem. The volume adjuster on the headset does not control the headset's volume. What it basically does is tell the PC to lower or increase the volume being sent to the headset.

Those USB headsets/mic's work differently than the analog's. The USB's tend to bypass some of the sound card functions and do those functions internally. I guess they are OK, but I would not use one. I'm probably biased as I have a recording studio and only analog headsets.