Equium A300D Sound Issue on Vista

Hi, I am currently having sound issues with my Toshiba laptop.
I am running Windows Vista (32 bit). The problem first occured after a windows update, I can't remember what exactly I did but after searching the net for some solutions I quickly found numerous threads regarding the same issue. I followed the instructions for the 'quick-fixs' that people stated throughout the forums. After numerous attempts with messing with regedit and such programmes and hours of searching the net I decided to try here. After messing around with the sound dependencies I now get a differernt issue.
When I hover my mouse pointer over the sound icon in the bottem right screen it states:
Volume: 0
Speakers
Conexant High Definition Smartaudio221
When I attempt to higher the volume by right clicking the icon and clicking sound I get 3 tabs:
Playback, recording & sounds.
Under Playback I get 3 sound devices:
Speakers (Conexant High Definition Smartaudio 221) - Working *A green tic beside it
SPDIF Interface (Conexant High Definition Smartaudio 221) - Working
Digital Output Device (High Definition Audio Device) - Working
I tried uninstalling the drivers and installing again from [here|http://uk.computers.toshiba-europe.com/innovation/vista_drivers.jsp?macId=&mode=allMachines&userOS=& action=search&selCategory=2&selFamily=382&selSerie s=173&selProduct=798&selShortMod=727&selOS=26&selT ype=42&country=17&language=13&useDate=1&dayupload= 6&monthupload=12&yearupload=1999&search=]
I am sure I installed it correctly but I am still having the same problem: When I go into my Speakers properties and click the tab Levels, nothing comes up, it's just blank.
Any ideas would be helpful
Regards

Hello
I believe that Windows updates can be responsible for this sound issue. Because of that I have disabled automatic updates. Before I install updates I use option View Available updates to see what is listed exactly. I have removed all checkmarks in front of optional updates. Maybe you should do the same and avoid installation of some updates that can have negative influence on well working sound, mouse or other hardware components.
If you are sure it is because of Microsoft update the first step you can try is to roll back OS to earlier time before you have installed all those updates.
Have you used TEST option for speakers? Any result?
Can you hear Windows sounds?
It is really stupid situation. At the end you must install OS again using recovery image. :(

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