this problem may happen to you too !
 

I have come acrossed with a strange problem like a nightmare to me .I have no audio , no sound on my htc touch hd since last night .no audio for any media file or any sound and notifications ! unable to make a call ( it connects but there's no sound on any side ).
When receiving a call , it can vibrate but doesn't ring !
Last night I noticed that simultaneously both the front and back speakers have been quieten ! It's very annoying and drawes me nut .
-having done a dozen of soft resets.....
-have removed at least 10 recent applications with no success !
-had pluged in and unpluged the headphone also ,but no change .
The strange thing is that even tf3d player doesn't work ! But in other hand windows media player works , of course with no sound (not in speakers nor via ear phones ).
The main culprit , I think is sk tool .last night i used it's auto clean and move up functions and it check marked automaticly the box of (system/audio.exe) file . May be it has removed that file somewhere or have killed it ! Is it possible that missing this particular file is the root of the problem ? If so ,any hard reset will be ineffective too !
So ,what can i do ? And what's going on ?
Any ideas ?.....please help .

Re: this problem may happen to you too !
 

a hard reset should fix the issue, on the off chance that it doesnt then reflash your rom or another one since that file is sure to be there

Re: this problem may happen to you too !
 

I had exactly the same problem quite a while ago, and it took me a lot of research and fiddling to determine the problem. My problem resulted from a program called Registry Mechanic, specifically, the sub-section entitled Registry Cleanup. When I checked the box to delete empty registry keys, I ended up with no sound, the inability to play any sound files, and the inability to play any videos.

SK Tools may have the same option concerning the registry.

NEVER, under any circumstances, get rid of empty registry keys. Some of them are actually needed for certain functions to work.

Okay, now that you may know what caused the problem, how do you return your phone back to normal?

Well, as the other person said, I had to hard reset and re-install everything. You can be sure, though, that I never check the Empty Registry Keys box. =D>

Peter

Re: this problem may happen to you too !
 

hi peter ,
it was a while ago...
and i wasn't around some time
but i found the solution soon !
i installed the last version of
"srs wow hd" ,an app that repairs
your hd audio drives and related
registery keys.in such a way ,there
is no need to a damn hard reset !
excuse me for delay