Notebook log-in page frozees at Start Up

I am using Acer Aspire Notebook Model D150. I suddenly lost the volume sound and the volume icon has disappeared from the right hand bottom tray.

Also, all icons on desktop are stretched width-wise and the monitor display is also stretched width-wise.

I made some searches and found my Realtek Hi Definition Audio driver was corrupt or missing, so I followed these steps (on one of your threads http://forums.majorgeeks.com/showthread.php?t=183547) from
imadork8317 Private E-2, and the result is that my notebook log-in page freezes as start up and I can use the notebook. What do I do now? Any help will be appreciated.

Finally, when searching how to post a new thread, I have successfully followed all the steps except: Finally, before you click on the "Submit New Thread" button look for the Thread Subscription drop down box and select instant email notification so that you can be notified as soon as you get a response.. Perhaps Major Attitude, Co-owner of this site can clarify more clearly,where to find this drop down box. I have searched all over and can't find it. Why do you guys make it so difficult to post a thread.

This is what I followed:

Lightbulb (Solved) Re: Realtek HD audio driver corrupt or missing - no sound
I had this same problem try the following solution

Go to Start

Click Run

Type regedit

go to the following location

\hkey_local_machine\system\currentcontrolset\control\class\{4D36E96C-E325-11CE-BFC1-08002BE10318}

delete any values that have upperfilters or lowerfilters

restart
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In reply to DavidGP's message to me, whatever gave you the idea that I have solved this problem. "Problem Solved" was quoted from Imadork's message on y our website that sort of pushed me to follow his suggestion as to how to overcome my problem, which has now landed me in a sorry state.

So, if you have any solutions for my problem, do please let me know, thanks.

By the way a friend suggested I start my notebook in SAFE MODE, go to SYSTEM RESTORE and restore it to an earlier date. DO YOU THINK THAT WILL WORK? AFTER LEARNING A LESSON FOLLOWING "IMADORK", I'M WARY OF TAKING ANY STEPS WITHOUT GUIDANCE FROM EXPERTS LIKE YOU.