Okay, well I have had this problem for a while now, but I have never had the time to make a post and ask for help, well here it is!
Okay, so when I am in game WHILE vent / mumble is running, my sound will just randomly go out. I have had this problem for a while and the only thing that fixes it is restarting my computer. My Sound Driver is up to date. This only seems to happen while I have Vent / Mumble on. It gets annoying to where I have to restart my PC while we are in the middle of a scrim. Whoever can fix this problem for me, I will gift something under 300 AP.