Restarting Windows Audio service semi-disables audio OSD on Win7

Windows 7. Thinkpad W520.
Observed behaviour:
Run "services.msc"
Restart the "Windows Audio" service or any service depending on it (e.g. Windows Audio Endpoint Builder).
Use the volume keys to modify the audio level. Audio level is modified but the on-screen-display doesn't indicate any change.
Use the mute button. Audio is muted and this is reflected in the Windows audio mixer, but the LED in the button doesn't light up to indicate the state change.
Expected behaviour: The on-screen-display should continue to function even when restarting the audio service.
I should note how I came across this. I was firing up some old games and some don't interact too well with the Windows 7 sound system and globally alters the volume level even after exiting, i.e. the mixer shows that the volume is at an unaltered 50% (or whatever), but the system is much quieter. Restarting the audio service fixes this, but apparently breaks the volume OSD.

It's probably just a bug in the OSD software code. A very minor bug, at that. Why are you so concerned about it?
Since there's probably nothing you can do to "fix" it, anyways.

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Windows Update Service Disabled - Error 80070422

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Wow, great!
I ran the tool that you mentioned and the virus in question was detected as: Trojan.Vundo
Maybe the logs will help some others, too: Here's the log on the first scan:
Malwarebytes' Anti-Malware 1.14
Database version: 808
8:40:22 PM 5/31/2008
mbam-log-5-31-2008 (20-40-22).txt
Scan type: Full Scan (C:\|D:\|)
Objects scanned: 169731
Time elapsed: 42 minute(s), 47 second(s)
Memory Processes Infected: 0
Memory Modules Infected: 1
Registry Keys Infected: 9
Registry Values Infected: 1
Registry Data Items Infected: 1
Folders Infected: 0
Files Infected: 8
Memory Processes Infected:
(No malicious items detected)
Memory Modules Infected:
C:\Windows\System32\byXOHaBU.dll (Trojan.Vundo) -> Unloaded module successfully.
Registry Keys Infected:
HKEY_CLASSES_ROOT\CLSID\{1449fa3b-f8a5-40ec-87da-707e80637ddd} (Trojan.Vundo) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{1449fa3b-f8a5-40ec-87da-707e80637ddd} (Trojan.Vundo) -> Delete on reboot.
HKEY_CLASSES_ROOT\CLSID\{663656df-6bae-460c-a612-8133df519346} (Trojan.Vundo) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\aoprndtws (Malware.Trace) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\Software\Microsoft\affri (Malware.Trace) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\Software\Microsoft\rdfa (Trojan.Vundo) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\affri (Malware.Trace) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\FCOVM (Trojan.Vundo) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\RemoveRP (Trojan.Vundo) -> Quarantined and deleted successfully.
Registry Values Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellExecuteHooks\{663656df-6bae-460c-a612-8133df519346} (Trojan.Vundo) -> Quarantined and deleted successfully.
Registry Data Items Infected:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\Authentication Packages (Trojan.Vundo) -> Data: c:\windows\system32\byxohabu -> Quarantined and deleted successfully.
Folders Infected:
(No malicious items detected)
Files Infected:
C:\Windows\System32\byXOHaBU.dll (Trojan.Vundo) -> Delete on reboot.
C:\Users\Shere Khan\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\LK0KREDB\kb516107[1] (Trojan.Vundo) -> Quarantined and deleted successfully.
C:\Windows\System32\fccywwts.dll (Trojan.Vundo) -> Quarantined and deleted successfully.
C:\Windows\System32\gEwtTLFy.dll (Trojan.Vundo) -> Quarantined and deleted successfully.
C:\Windows\System32\yayvSiHb.dll (Trojan.Vundo) -> Quarantined and deleted successfully.
C:\Windows\System32\_Shere_Quarantine\fmsnvygd.dll (Trojan.Vundo) -> Quarantined and deleted successfully.
C:\Windows\System32\byXnMghG.dll (Trojan.Vundo) -> Quarantined and deleted successfully.
C:\Windows\System32\byXPfgfe.dll (Trojan.Vundo) -> Quarantined and deleted successfully.
Here's the log on the second scan, after a restart:
Malwarebytes' Anti-Malware 1.14
Database version: 808
9:48:01 PM 5/31/2008
mbam-log-5-31-2008 (21-48-01).txt
Scan type: Full Scan (C:\|D:\|)
Objects scanned: 168808
Time elapsed: 56 minute(s), 31 second(s)
Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 2
Memory Processes Infected:
(No malicious items detected)
Memory Modules Infected:
(No malicious items detected)
Registry Keys Infected:
(No malicious items detected)
Registry Values Infected:
(No malicious items detected)
Registry Data Items Infected:
(No malicious items detected)
Folders Infected:
(No malicious items detected)
Files Infected:
C:\Windows\System32\byXOHaBU.dll (Trojan.Vundo) -> Quarantined and deleted successfully.
C:\Windows\System32\dqhreobq.dll (Trojan.Vundo) -> Quarantined and deleted successfully.
On the third scan, no other infections were found. The files and locations and one or two registry entries are similar to what I suspected was not allright, so I guess the (right) virus has been found and eliminated. Have enabled Java in FireFox and everything seems fine, haven't touched Internet Explorer just to be on the safe side so I can't say anything about that, but everything looks allright. Seems this was the problem. Thanks again, mate, your post was a life saver.

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Quote from irfan H
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This question was solved.
View Solution.

Hi,
Open windows Control Panel, open Administrative Tools and open Services. Check that the following services are all showing as Status= Started and Startup Type= Automatic
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Windows Audio
Windows Audio Endpoint Builder
Regards,
DP-K
****Click the White thumb to say thanks****
****Please mark Accept As Solution if it solves your problem****
****I don't work for HP****
Microsoft MVP - Windows Experience

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Run Audio troubleshooter
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hi everyone,
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This question was solved.
View Solution.

HassanMeekal wrote:
Guys ,i want to report that when i reinstalled the latest driver from hp website the problem persisted.
But after all i tried a same hd audio driver that i got in the software backup of my hp laptop that hp itself already saved in my system when i bought it.
when i installed that driver that was given in drivers backup believe me the problem is gone.
The change that i noted is that in Startup services (by msconfig.exe) a new option Realtek HD audio manager appeared that is checked to startup at system startup so in this way audio service functions good and problem is gone.
That option didn't appeared when i installed the latest driver from the hp website.
So Really Thank you everyone who has helped me.
Thank You.
Hello again HassanMeekal.
If the generic driver bundled with Windows works without any issues I'd say stick with that one. There shouldn't be many, if any, features that you'll be missing out on.
Have a great day.
Please click the white star under my name to give me Kudos as a way to say "Thanks!"
Click the "Accept as Solution" button if I resolve your issue.

Restarting Windows Audio service semi-disables audio OSD on Win7

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