Hi,
I have a PC which has been working fine with regards the on-board sound for a couple of years. Suddenly, it was noticed that the sound no longer works. I have checked the sound and audio devices properties box in the control panel. This told me that there was no sound device attached. ALSO, all of the controls were greyed out.

I rolled back to the oldest system restore point I had. This was about a week ago. This time the sound and audio devices properties box said that there was a device attached. Also all of the controls were back to being in black and usable. When I tried out various sounds, no sounds actually came out of the PC. I tried headphones and the speakers, but to no avail.

I backed out of the restore as I had installed a number of programs betweenm the two points in time and I didn't want to lose them.

The only thing I can put this down to is that I run a regular registry scan. This fixes my registry but perhaps this time it's fixed it good a PROPER as they say.

Is there anything I can do to repair the damage? I've tried reinstalling the drivers (using Driver Detective) but got NOWHERE. You ran a "regular registry scan" using what software? Is that when the sound problem started, immediately after that? Did you notice any gradual degradation of your sound function or did it just suddenly stop working?I was going to say reinstall drivers until I saw that you did....
It might just be a coincidence that it brkoe after you ran a registry scan. You might need to get a new sound card but you can get one for 10 or 15 dollars at neweggIs you sound card integrated? If so what make and model is your computer. Problems like these can usualy be fixed by going to the manufacturer website and downloading the sofware packaged with drivers. For example my card is integrated and the drivers alone are not much help since there is a software package that runs it all. Quote

I've tried reinstalling the drivers (using Driver Detective)

I run a regular registry scan