Hi I've recently installed Windows 7 on my HTPC and setup Media Center (WMC) and it seems to be working well after a fresh boot but, when the computer wakes from sleep and I try to play live or recorded TV I get "Files needed to display video are not installed or are not working correctly. Restart Windows Media Center or restart computer." Restarting WMC doesn't help so the computer needs to be rebooted in order to get it to work. This isn't really an acceptable solution. I've read some things online that adjusting the sound setting will fix this but I've tried every combination (stereo, 5.1, 7.1 in WMC & stereo in the HDMI driver) and it still doesn't work. I'd appreciate any help anyone could provide. Thanks.