Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Audio devices suddenly "not installed"

26 Aug 2012   #1

Windows 7 Ultimate x64
Audio devices suddenly "not installed"

Ok, this is going to be a long post, but I'm having a common problem with uncommon issues.

Two days ago, my desktop audio worked fine through USB headphones, onboard, HDMI, whatever. I move my computer back to my apartment and suddenly, I have no audio or audio devices. I'm not new to the dance of fixing problems on the computer, but this seems to be extremely troubling.

Basically, Windows reports that I have no available playback or recording devices (even with the "show disabled devices" option enabled); it only says "No audio devices are installed" along with the more general "No Audio Output Device is installed". However, Device Manager reports them being operational just fine. I have done the whole dance with uninstall, reboot, disable, reenable, scan for hardware changes, and still, I have nothing. I have double checked the services for audio/power, and everything seems to be working dandy. SFC reports no integrity violations. Dxdiag reports that there are no sound cards present even though clearly, the device manager seems to report them fine.

I had the correct driver for onboard installed, but when I uninstalled the driver for testing purposes, it went away. I don't think that should be the primary concern here.

Here's some screenshots:

If anyone can provide some suggestions, I would greatly appreciate it.

Thank you all.

My System SpecsSystem Spec
26 Aug 2012   #2

Windows 10 64 bit

Have you tried a System Restore, back to a date when it all worked OK? If not give that a shot.
My System SpecsSystem Spec
26 Aug 2012   #3

Windows 7 Ultimate x64

Quote   Quote: Originally Posted by fireberd View Post
Have you tried a System Restore, back to a date when it all worked OK? If not give that a shot.
As I was scratching my head, I decided to do this before you posted as a last ditch effort. You know what? It actually worked.

For most my teenage/adult life, I have hated the system restore functionality and cast it off as a waste of space if you know what you are doing. Somehow, it pulled through this time. Thank goodness I decided not to turn it off on my install when I put in an SSD.

It turns out that by plugging in my USB headphones into my front USB ports (ones routed through the motherboard), I caused some system glitch that gets rid of all audio devices except for some onboard audio digital outputs. I compounded the problem by uninstalling/reinstalling drivers via device manager.

However, plugging the headphones into the rear USB ports cause no problems.

I think I need to verify that the front USB's are plugged in well to the mobo and then check if there is dirt/dust in the port itself causing communication issues. Otherwise, this is done a deal.

At the end of the day then, why didn't SFC catch anything? Why did system restore work but not SFC? So strange... Anyway, thank you good sir.
My System SpecsSystem Spec

26 Aug 2012   #4

Windows 10 64 bit

SFC (System File Checker) and System Restore are two different functions and serve different purposes.

I keep System Restore always on. Its saved my butt many times and also made me look like "supertech" when I use it and fix client PC's.
My System SpecsSystem Spec

 Audio devices suddenly "not installed"

Thread Tools

Similar help and support threads
Thread Forum
"Malware Protection Live" Suddenly Installed Yesterday- How to Remove?
I noticed a 'check mark' icon in my system tray and on investigating it is a program called "Malware Protection Live". It just suddenly was there...It shows up in Control Panel > Programs and Features and it appears I could uninstall it there....It says it was installed yesterday, but I have no...
System Security
"Display Devices and Installed Apps" tooltip keeps popping up randomly
Recently I have had a problem on my PC where in the lower third of the left hand of my screen a tooltip keeps popping up. The tooltip says "Display Devices and Installed Apps." This tooltip seems to override everything because if I'm full screen in another application it will still pop up. When I...
General Discussion
VirtualBox - "Some audio devices (PCM_in) could not be opened"
I'm trying to use VirtualBox however whenever I start any virtual machines I am presented with this message: "Some audio devices (PCM_in) could not be opened. Guest applications generating audio output or depending on audio input may hang." This happens regardless of which guest operating...
"No Audio Output Device Is Installed", but I HAVE installed one?
Hi, I'm pretty desperate for help with this issue, I've been searching on Google for the last three and a half hours for a solution but came up with nothing, so I thought I'd post here to see if anyone can tell me what's up. I turned on my laptop today to find that there was a little red 'x'...
Sound & Audio
Audio stops working, "No Audio Output Device Installed"
I'm running a Dell XPS 420, which came with Windows Vista. I decided this morning that I was going to give Windows 7 a try, backed up some media on another PC, and did a completely fresh install. Everything worked perfectly, I didn't even have to install any drivers. My native resolution was...
Sound & Audio

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 18:02.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App