Startup error 1001 & Vol control not working

So randomly today my volume control over the start bar doesn't work.. I've tried changing the area on it to update the settings, to no avail, and upon re-opening the program I get the error 'could not load library' 1001.
Reinstalling did nothing either.
The only system changes recently are that I installed Comodo 3 days ago, but it's been working since then until today.