No Audio devices are installed

Hello!

When did this issue start?

Can you post a screenshot of your device manager?

We need to make sure that the device drivers for the sound is installed. Otherwise, you should install it. It should install automatically by Windows, but if not, you may refer to the manufacturer's website to get the latest drivers.

If there is a driver installed for the sound, uninstall it, and then restart the computer. See if Windows will install it.

I have the exact same problem. Windows 10 with a Bose Companion 5  speaker system, which has performed fine for three years on this machine, with Win 7 and now Win 10.

No software or hardware has changed. Worked yesterday, does not work today.

The audio service refuses to start. The "troubleshooter" does nothing (as usual) and the "Sound" section of Device manager insists no audio devices are installed, which is nonsense. Last restore point is 4 days ago, and failed to install when I tried.

ps- Tried uninstalling the device and  scanning for hardware changes. Nothing.

    Uninstalled and reinstalled driver. No change.

HP9090.

The drivers are reported as fully up-to-date by Windows.

They worked just fine on Monday.

I have not changed anything.

Device manager shows the device (Bose Companion 5) as working properly.

Everything is just dandy, according to the OS.

The only small problem is that it doesn't play anything- and the  red "x" appears in the icon tray.

Oh- and I have now tried six restore points, back into January. Not one works.

(I'm replying on a different computer Zach, in case that makes any difference).

Hi Zach,

Please see my reply to Soapy, it was intended for you.

To both-

I just swapped the Bose system to another PC, where it works fine, so not a hardware issue.

The event list in my Sound etc controller is very like Saibal's Capture 2 , apart from times and  being a Bose driver, not Realtek.

-also- in the Services listing, Audiosrv reads "Failed to read description. Error code 2."

Startup is set to automatic. I have tried variations on stopping and starting, with no effect.

I just checked the services list on the Win 10 machine that has working sound.

There is no service named "Audiosrv" on it, only  "Windows Audio".

As both machines were upped to Win 10 about the same time, I don't understand why the services would differ...

... It gets odder. On the problem PC, there exists no Audiosrv.dll, though there is an AudiosrvPolicymanager.dll

Looks like I found it.

Saibal- This seems to have fixed the problem for me.

Run as admin SFC /scannow

If the Audiosrv.dll file has been corrupted, this should replace it with a new copy.

nb It's possible this is the result of a malware attack, but that's another story.

Have you been using that 3rd party driver updater to update your computer's drivers? If yes, I recommend not to. Try to have it uninstalled, then uninstall the two "Realtek High Definition Audio", restart your computer and then let Windows install it.

Also, try to follow what worked for Soapy Sam :)

Right-click Windows logo, select Command Prompt (Admin), type SFC /scannow