Lost Conexant audio in DV8000 notebook

Recently had a virus (now cleaned) that seems to have wiped out my sound. Computer says no audio device is installed; everything in audio device box is grayed out. Conexant AC-Link Audio appears in software list, but I can't uninstall it or install the updated driver. I run XP SP3 w/ AMD Turion64 2.2 ghz/1MB. Suggestions welcome.

Okay, friends, this is going to sound just plain weird but for what it's worth ...
I have had the same problem and not been able to fix it for months!  There are several fora entries (here and elswhere) about manifestations of this problem in Win XP (SP3) and other environments.  I have tried virtually EVERY solution short of reformatting my hard drive ... not gonna do that.  Nothing has worked for me.  My precipitating event was ... well ... there wasn't one.  I came to the computer one day and there was simply no sound device.  It was as if aliens had snuck in during my sleep, opened the case, and run off with my sound hardware!  I couldn't load Conexant drivers ... cause there was no sound device.  Where it went is anyone's guess.  I tried to make the computer rediscover the hardware but it was having none of it.  Then ... magic!
I accidentally left the computer (a Pavilion dv8000 laptop) unplugged all night and, of, course the battery ran down to nothing.  When I discovered the problem I plugged the thing back in and booted the system up.  In the process of coming up it 'discovered' my 'new' sound hardware!  Yes, those thieving aliens brought it back!.  It worked fine for two days and then the sound hardware disapearred again!  Again, no clear or apparent precipitating event.  This time, I purposfully ran down the battery again and (after plugging it in and starting it up again the next day) once again the system 'discovered' and loaded drivers to the sound hardware, and everything was wonderful  (**bleep**, those system beeps are sweet!)
The sound hardware has not disappeared again.
When all else fails, pull the **bleep** thing's plug!  It worked for me!!  Good luck!!!

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