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The last few times that I woke my PC out of hibernate, the sound wasn't working. I re-enabled the sound card and reinstalled the driver. It still isn't working. When this happens, Flash will crash when I use it. iTunes doesn't work, just as some other programs.

Specs:
Gigabyte GA-MA790x-UD4P and it's on-board sound card
AMD Phenom II x4 955
ATI HD4890
2x2GB G.Skill Ripjaws
Western Digital HDD (not sure which one)
Windows 7

There seem to be a lot of errors coming from ShellHWDetection, MMCSS and AeLookupService, in my log.

Sample of a ShellHWDetection error:

System 

  - Provider 

   [ Name]  Service Control Manager 
   [ Guid]  {555908d1-a6d7-4695-8e1e-26931d2012f4} 
   [ EventSourceName]  Service Control Manager 

  - EventID 7011 

   [ Qualifiers]  49152 

   Version 0 

   Level 2 

   Task 0 

   Opcode 0 

   Keywords 0x8080000000000000 

  - TimeCreated 

   [ SystemTime]  2011-11-26T11:39:30.513091900Z 

   EventRecordID 545363 

   Correlation 

  - Execution 

   [ ProcessID]  624 
   [ ThreadID]  5176 

   Channel System 

   Computer Simon-PC 

   Security 


- EventData 

  param1 30000 
  param2 Schedule 

Sample of a MMCSS error:

    System 

  - Provider 

   [ Name]  Service Control Manager 
   [ Guid]  {555908d1-a6d7-4695-8e1e-26931d2012f4} 
   [ EventSourceName]  Service Control Manager 

  - EventID 7011 

   [ Qualifiers]  49152 

   Version 0 

   Level 2 

   Task 0 

   Opcode 0 

   Keywords 0x8080000000000000 

  - TimeCreated 

   [ SystemTime]  2011-11-26T11:39:30.513091900Z 

   EventRecordID 545363 

   Correlation 

  - Execution 

   [ ProcessID]  624 
   [ ThreadID]  5176 

   Channel System 

   Computer Simon-PC 

   Security 


- EventData 

  param1 30000 
  param2 Schedule 

And a sample of an AeLookupService error:

- System 

  - Provider 

   [ Name]  Service Control Manager 
   [ Guid]  {555908d1-a6d7-4695-8e1e-26931d2012f4} 
   [ EventSourceName]  Service Control Manager 

  - EventID 7011 

   [ Qualifiers]  49152 

   Version 0 

   Level 2 

   Task 0 

   Opcode 0 

   Keywords 0x8080000000000000 

  - TimeCreated 

   [ SystemTime]  2011-11-26T12:12:00.755639300Z 

   EventRecordID 545446 

   Correlation 

  - Execution 

   [ ProcessID]  624 
   [ ThreadID]  5908 

   Channel System 

   Computer Simon-PC 

   Security 


- EventData 

  param1 30000 
  param2 AeLookupSvc 
share|improve this question
    
Does it work if you shut down and restart? When was the last Windows Update? –  CharlieRB Nov 26 '11 at 20:02
    
Then it does work. I'm not sure, can I check it somewhere? –  Simon Verbeke Nov 26 '11 at 20:15
    
Control Panel/System and Security/Windows Update. You may also want to check the computer manufacturer's web site for updates for BIOS and sound. Let us know what you find. –  CharlieRB Nov 26 '11 at 20:24
    
The last time was yesterday (25/11). Could the BIOS be the problem? It hasn't been updated (that I know of ) since I own the PC. –  Simon Verbeke Nov 26 '11 at 20:26
    
You can try updating the BIOS. Make sure you are using the manufacture re's drivers and not the generic ones Windows sometimes assigns. –  CharlieRB Nov 26 '11 at 20:28

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