I have just rebooted Vista and for some reason when I now try and start Media Center i get a message saying "Media Center has stopped working". When I click on view problem details it also tells me: Description: Stopped working Problem signature: Problem Event Name: CLR20r3 Problem Signature 01: ehshell.exe Problem Signature 02: 6.0.6000.16386 Problem Signature 03: 4549b55e Problem Signature 04: mscorlib Problem Signature 05: 126.96.36.199 Problem Signature 06: 4536f11f Problem Signature 07: 3318 Problem Signature 08: 15a Problem Signature 09: System.UnauthorizedAccess OS Version: 6.0.6000.2.0.0.256.1 Locale ID: 2057 I have also noticed that there is a service called "Windows Media Center Service Launcher" which isnt started. When I try and restart it it just stops after a couple of seconds. I have checked the media center event log and its full of messages like "The recording schedule has been corrupted and was automatically deleted on 08/31/2007 07:05:37. You may need to reschedule your recordings." I have done some searching and the only thing I have found that seems to relate to this message is this link: http://www.msfn.org/board/index.php?showtopic=103511 I have tried some of the advice in this thred but the event log was then full of messages like "unable to find C:\Documents and Settings\All Users\Application Data\Microsoft\eHome\EPG\tracehelper\DefaultDomain-VISTAPC$.xml" so I restored the EPG folder and tried to just delete the massive .sdf files. Does anyone have any ideas or know of a way to completely reset Vista Media Center back to default settings ?