I have been using my SignaLink USB external sound card for over a year successfully. I use it for digital work on both HAM and MARS bands but for some reason this past week Windows 10 started muting the "input" or microphone from it. I take it off mute and within 20 seconds to a few minutes it is muted again by Windows. What I do see is in the Volume Mixer a pop-up labeled Microsoft(C) Register Server that shows as being turned off or muted. I have tried uninstalling and reinstalling and also changing USB ports to no avail.
I have been using it with Windows 10 since early August with no problem. I ran Tweaking PRO, it set for all repairs, for over 5 hours; separate runs of SFC /Scannow; McAfee Virus Plus and a Malware program on my setup and nothing has come up with a fix. I read the Q&A files for this device on line and don't find anything that appears to address this problem. HELP!