I have no experience in that area at all. If your budget permits you can invest in another microphone or ,since you just installed windows, you could downgrade to older version of windows. I don't see any difference in between older and newest versions. If you have co-workers or friends with mics, you could test theirs on your system.
If I were you, I would ask the logitec forum before completely giving up. This is a driver issue and you might need some legacy drivers, just need to know which ones to get. What is your mother again ?