Started up WMC and with live TV... I would get about ten seconds of program and then it it would skip back and repeat; eventually stopping and displaying the message "Video Error - Files needed to display video are not installed .. and requesting a restart of WMC. I was getting the same symptoms on previously recorded programs also. Restarting windows, rebooting, powering off TV and AVR; no progress.
I eventually resorted to the system restore point created before installing windows update. Wife is happy and I am off the hook for now. This is reason number 420 for having more then one HTPC in the house.
W7-64 SP1 on a AMD quad core engine w/8GB memory GT430 video... Can't remember to many specifics.
HDHR3-CC and Haupaug 2250 tuner.
BTW: HDHR TV utility is working fine.
Anyone have any clues as to what may have happened. and how to fix?