I'm using build 9926 on it own SSD in a dual-boot set-up with Windows 7. All was working well with Win 10 until an update was executed. Part of the update was a new nvidia driver for my GT 630 graphics card. After the update, I no longer have any sound when playing videos or MP3 files. I still can hear all of the Windows-related "dings". The speakers are my default playback device & test as working. My monitor is plugged in via DVI & speakers by 3.5mm jack. Oddly enough, if I connect to my TV via HDMI, everything works perfectly. Any help would be greatly appreciated.