I was posting from my phone earlier. Here's
some information from SiliconDust's forum:
Shortcut to Completely Reset Media Center
Sometimes, especially when lots of problems show up, it is easier to reset Media Center and start over to make sure everything is working in concert together. To do a Media Center reset, perform the following:
1. Please close WMC and open Task Scheduler (Start > All Programs > Accessories > System Tools > Task Scheduler
2. Expand Task Scheduler Library, the Microsoft, and click on Media Center
3. Right click on MediaCenterRecoveryTask and choose Run. You will not get any indication of anything happening.
4. Open WMC. It will tell you that a serious error occurred, and take you to the initial setup screen
5. Go through the TV setup wizard to set up your tuners, channel lineup, etc.
Running the MediaCenterRecoveryTask will set Media Center back to its default state. YOU WILL LOOSE ALL RECORDING TIMES, GUIDES, ETC. that you have set up.
Shortcut to Reset PlayReady Only
If you need to reset PlayReady, you can do the below to speed up the process (no uninstall of the PlayReady software). This just resets the data to the default state (read: empty).
1. Close Media Center
2. Open CMD prompt as Admin (click on the start manu, type cmd, right click on the exe and select "Start as admin"
3. Type “net stop ehrecvr”
4. Type “cd %programdata%\Microsoft\PlayReady”
5. Type “del *.hds”
6. Type “rmdir /s Cache”
7. Type “cd %programdata%\Microsoft\ehome”
8. Type “del *.hds”
9. Type “rmdir /s Cache”
10. Type “net start ehrecvr”
11. Launch Media Center
12. Go to Tasks->Settings->TV->Update PlayReady
I have done the above several times. I would not use a batch file unless you place the proper sleep/waits in the code as the services need time to stop and that can vary. I ended up just executing the commands one at a time by placing a PAUSE in the batch file after each command so I could ensure they executed completely before moving on.
Digital Cable Advisor (DCA) Override
If you are having trouble finding the Digital Cable Advisor in Windows Media Center, please see pec's post titled "I see no DigitalCableAdvisor in my WindowsMediaCenter Extras"...
For hardware (systems) that cannot pass DCA for one reason or another, you can force the system to pass the DCA test. Please note that this does not mean you do not need the DCA software on your system because you do. This only forces the system to pass DCA. Systems that do not normally pass DCA and are forced sometimes can have playback performance problems (i.e.: not enough horsepower!).
[Moderator edit: MissingRemote has requested that this not be posted on here. The override can be downloaded from their site at http://www.missingremote.com/guide/override-digital-cable-advisor-windows-media-center-7