BleepingComputer.com: No Volume Icon And Sound!

Hi there, my computer has been working fine until it was infected with a trojan and i do a system format to it. Well virus is gone etc. and was very happy about it.

But one day, when i try to listen to some music, the pc speakers just do not have any sound. After several attempts in finding out what is the problem, which i did not, I have decided to just jack in its plug/cable to the earphone slot. There sure is sound coming out then.

Still, the problem still persists when comes to streaming of videos online. There is video visual but simply no audio. Its like watching a mime show. I have been tolerating it for about 6 months but simply could not held it any longer.

The audio in my com is realtek hd audio manager. Please do help me solve this problem.

Another problem i have is that i cannot place my volume tray icon at the taskbar. Couldn't even checked the box as all was blocked. how?

Set windows to show hidden files,
How to see hidden files in Windows
Then navigate to:
C:\ Windows \ System32 \ dllcache
Locate sndvol32.exe
Right click it, and select Copy.
Navigate to C:\ Windows \ System32
In an open area, right click and select Paste

If Windows says the file already exists, do you want to replace it, select Yes

Reboot