Windows Vista Updates Driver to the Latest Non-Working Version
I updated my entertainment PC to the Microsoft Windows Vista operating system recently. And I was pleasantly surprised that Windows Vista installed all of the drivers for my ECS K7VTA3 motherboard. Normally, on Windows XP and previous generation of Windows, I had to pull out my motherboard driver disc and install each driver separately. But as soon as I installed Windows Vista, I was able to enjoy my videos and music without much effort.
Surprisingly, today, I turned on my entertainment PC and found that it no longer produce sound. The volume control indicated that "No Audio Output Device is installed." That's funny, because it was still working yesterday. I suspect the the automated Windows Update screwed up. So I pulled up the driver in "Device Manager" and managed to roll-back the driver. Once the driver is rolled-back, the sound came back.
In the rest of this document, I'll show you how to roll back a driver. And I'll use my sound card driver roll-back as an example.
Roll-Back a Driver
First thing to do is to pull up the "Device Manager" to see what is wrong with your driver. You can do that by clicking on the "Start" menu, follow by right-clicking on "Computer", choose "Properties", and finally click on "Device Manager" under "Tasks".
The screen shot below shows an example of the "Device Manager". It is indicating something is wrong with the "Realtek AC'97 Audio for VIA (R) Audio Controller" by displaying an exclamation mark.
To fix the problem, right-click on the non-working driver, then choose "Properties". You'll see something like the dialog box in the following screen shot. As you can see Windows Vista reports that "This device cannot start (Code 10)".
Click the "Driver" tab. Once you do, you'll see the following screen.
Click on the "Roll Back Driver" button. Windows Vista will ask you to confirm with the following dialog box.
Click on the "Yes" button. Windows Vista will proceed to uninstall the latest driver and reinstall the previous working driver. After it done its job, you will see the following dialog box, where it shows you the details of the previous driver.
Apparently, the previous working driver is the "VIA AC'97 Enhanced Audio Controller" that is dated 6/21/2006. After rolling back to this driver, the audio is once again working on my Entertainment PC.
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