ok, it started with no sound after the day before everthing was ok. Then I checked teh device manager and teh hardware looked ok. Now after trying to pin down the problem further, I go back to the device magr and i get the popup MMC cannot open the file C:\Windows\system32\devmgmt.msc This may be because the file does not exist, is not an MMC console, or was created by a later version of MMC. ect this is win 7 pro. I have eset antivirus and ive run anti-malware. I have tried to download or run secunia to try to isolate any issues. When i double click on tthe psia.exe i get the popup user control and answer yes the command box pops up for less then a second then disappears.