Display driver error - new channel line up & clock change

[wackychimp]

I've been fighting with the "Display Driver Error - Unable to display protected content" in this thread: http://www.thegreenbutton.tv/forums/vie ... 47&p=72912

Suggestions there mention making changes to sound settings but I'm not seeing the same settings in my control panel that are listed in the thread. Moving here becasue I'm thinking this may not be related to Cable Systems as that subforum prescribes.

I'd originally thought it might be becasue we had a lineup change in our area and when I had to switch the EPG it messed up. I made no other changes to the system...

...except that I changed the system time becasue it was like 10 minutes fast. In my research on the driver error I've read that this can be a problem... but I can't find the fix for it. Maybe my google-fu isn't up to snuff becasue searches for things like "WMC DRM clock" and the like is returning a lot of results for people who have over clocked their systems. That doesn't apply to me.

Any suggestions on how I can fix this?