Can i reinstall audio driver ?

i m having some problems with audio and recording , i cant use stereo mix for recording ( i have posted regarding stereo mix earlier but didnt get any answer resolving the issue ) so i want to reinstall the realtek audio driver v. 6.0.1.7156 that i have .
now my question is can i unstall the driver from control panel---programs---uninstall ? and then install it from hp support assistant ( as i think if i unistall it hp support assistant app will identify it and ask me to install ) .
 . i have done all the primary things for stereo mix to work and also done googing ,,,but its simply isnt working .but i want stereo mix to work.
so am i going in the right way ? should i reinstall the realtek hd audio driver  as mentioned ? or any other process is there
please help me.
thanksgiving
souvikk.

Dear souvikk -
I understand you are having some problems with audio and recording on your computer.
I will try to help.
(You do not state what version of Windows you are running, so I will assume this is Windows 8.  If you have another version, you may be able to adapt the instructions to your version.  If not, please tell me which version of Windows you have so I can provide you with those steps.)
You can reinstall the realtek audio driver manually, if you want to. However, let's see if Windows can automatically locate and fix the problem first, using the troubleshooting tool.  Follow these steps:
From the Start screen, type troubleshooting to open the Search charm, and then select Troubleshooting from the search results.
Under Hardware and Sound, click Troubleshoot audio playback and then click Next when the Playing Audio window opens.
The Playing Audio window opens. Click Next.
A new window opens. Select the device you would like to troubleshoot. Then click Next and follow the on-screen instructions.
If a recommended action displays, select Apply this fix or Skip this step to continue to search for other problems.
If the above steps do not solve the problem, next try updating the audio driver for Realtek.  Follow these steps:
Connect to the Internet.
From the Start screen, type device manager to open the Search charm, and then select Device Manager from the search results. 
Double-click Sound, video and game controllers.
Right-click the name of the sound hardware and select Update Driver Software. 
Click Search automatically for updated driver software and wait for Windows to update the driver software. 
Windows checks to see if updated driver software is available. If an update is available, let Windows install the update.
When the update is installed successfully, test the device.
If neither of these suggestions fix the problem, you can try to reinstall the Realtek audio driver. You should install from HP; not Realtek. 
1. Go to http://www8.hp.com/us/en/support-drivers.html.
2. Click on Drivers & Downloads, then enter your computer name or model number.
3. Select your operating system, then click next, and scroll down to locate the download.
4. Expand the Driver-Chipset section and locate Realtek Card Reader Driver.
5. Click Download.
6. Choose Use HP Download and Install Assistant (Recommended) and then follow the instructions.
If none of these suggestions resolve the problem, please let me know and we can try something else.
Sincerely,
dhtp
DH
I work on behalf of HP.
Please click "KUDOS Thumbs Up" if I have helped you, and click "Accept as Solution" if your problem is solved. Thanks for the feedback!

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