Ok ive tried all of this and more. ive scourged the internet for everything. still nothing. I have the same problem. But lemme go into it just so u guys kno. After i installed the windows vista service pack 2 my sound went off. ive restarted and everything. nothing. I even did the scan for changes and nothing. it shows i have bluetooth sound but i have nothign thats bluetooth around me so idk. it doesnt even show my audio driver it just shows the stupid bluetooth. someone plz help. its making me soo mad.
I have the same issue. I have a HP DV9925nr with Vista Home Premium 64bit. A few days ago I had Windows conduct updates and I lost the sound. I thought nothing of it and had Vista update itself to SP2. I had this issue before and after SP2. The sound icon has the "x" over it and lists "no audio output device installed." I have downloaded the Conexant driver several times for my computer and to no avail. I have searched for the speaker device on my computer but it does not exist. When I go to device manager, there is no folder for speakers nor audio. My computer believes that the speakers themselves do not exist. The several remedies that people have posted have offered me nothing. I am not the true computer wiz, but I know that something is seriously wrong with my computer.
*I have also tried using headphones, but I get absolutely nothing out of them.
There are not drivers special for SP1 or SP2 or for systems without any SP . Driver is not updated for two years but it has nothing to that (theoretically).Of course practically sometimes is possible to have problem with compatbility with any hotfix or service pack.