Ok, good.
as for the MMDRIVER.inf
That is the standard Windows 2000 and Windows XP default sound CODECS that is installed from a clean slate when you do a clean install. Normally the default Windows install must have CODECS to play sound in Windows. It will be installed for each installation.
When Windows setup does not find or detect a sound card, these default Microsoft built-in CODECS may not installed. When the sound card is added or the sound card driver is installed later on, some cheap low end sound card drivers do not detect the availability of these default CODECS and install one if not exist, although most branded or high end sound card drivers such as those from Creative Labs will handle this scenario properly.
This can sometimes create a situation where you have no sound output from the system.
You can check to see if your system is impacted by these missing default Windows CODECS: First, go to Start->Control Panel-> Sound and Audio Controllers. Next, click on the hardware tab. Choose the Audio CODECS entry and then select Properties.
If you having this error and no sound heard, you will likely to find only 2-3 entries of CODECS in the listing. This will be the specific cause if you have not applied the registry patch to fix Flash no sound issue.
This patch to the registry fix can add back the sound drives mapping. However, if the required *.acm files are missing then those registry mapped codecs usually do not work. You can manually install the default codec manually to ensure the required files are copied.
You can install these codecs manually as follows:
Click on Start ->Control Panel
Click on Add Hardware
Click on Next
Select Yes, I have already connected the hardware”
Then click Next
Choose Add a new hardware device near the bottom of the list
Click Next
Select Install the hardware that I manually select from a list (Advanced)
Click Next.
Select Sound, video and game controllers from Common hardware types
Click Next
Choose Standard System Devices from Manufacturer or similar wording. To install or reinstall video CODECS, select “(Standard system devices)” from Manufacturer and “Video CODECS from “Model” instead.
Choose Have Disk
Select Browse in the Install From Disk dialog box. Navigate to folder C:\Windows\System32, and then locate MMDRIVER.inf file. Highlight MMDRIVER.inf and click Open or you may be able to click (double) on MMDRIVER.inf file
Click OK in the Install From Disk dialog box.
Click on Continue Anyway button if you get a logo compatibility warning.
You should get a list of supported Audio Codecs supported by the MMDRIVER.inf on the Add Hardware List
Good luck.
