This solution works. [URL]#M91840
Gentlemen, We had a problem with this driver. It was causing a long delay during the restart process. We were lucky to uninstall it and get back to normal. Until yesterday, the update to it was appearing in windows optional updates. I was ignoring it. But yesterday it was forcefully installed by Windows update, and I was back to the long wait for restart state. I was able to uninstall it and install A09. once again  The problem is, whenever I run Windows update, it gets installed again.  I contacted Microsoft to report the problem, they asked me to contact dell. I would like to know how can we get rid of this thing..... Also, is there a way to report this cursed driver to dell..... Any help?  
How to get rid of Realtek Audio driver 6.0.9210.1, A10