I have toshiba satellite A205-s5871 laptop which runs windows Vista home premium SP1. It used to work properly until it was attacked by virus. I have now removed the virus but it does not play video or audio. The motherboard is intel 965 express chipset family. The audio device is I think Realtek High Definition Audio. I downloaded driver from toshiba and installed it but still no result. I also tried to: Repair Vista = no effect install another media player=no effect check the audio device=fine During the time of infection, it used give error messages like: Soffice has failed to start because sfc.dll was not found CEC_MAIN.exe has failed to start because ksuser.dll was not found File system error (-1073741790) Consent UI administrative applications has stopped working Problem signature: Problem Event Name: APPCRASH Application Name: consent.exe Application Version: 6.0.6001.18000 Application Timestamp: 47918d7b Fault Module Name: ntdll.dll Fault Module Version: 6.0.6001.18000 Fault Module Timestamp: 4791a7a6 Exception Code: c0000022 Exception Offset: 00009cac OS Version: 6.0.6001.2.1.0.768.3 Locale ID: 3081 Additional Information 1: 9d13 Additional Information 2: 1abee00edb3fc1158f9ad6f44f0f6be8 Additional Information 3: 9d13 Additional Information 4: 1abee00edb3fc1158f9ad6f44f0f6be8 Now it does not display those error messages anymore. But it displays error messages w/h it used to display even before the infection: Could not c:\users\lata\local specified in the registry. Could not load or run 'Settings\Application' Could not load or run 'Data\asdlfj3\services.exe' specified in the registry Please, tell me what I should do. Tell me more about Vista files related to multimedia streaming/playing. What do you think is the solution?