Realtek ALC880 - No audio device

Did you recently just install the sound card? Sounds (pun intended) like the sound card wasn't properly installed, or it was damaged by grounding.

I am sorry if i mentioned sound card,its integrated with the Motherboard.I am starting to feel that it got damaged.

is it turned on in the bios
control panel sounds mine has 4 different settings digital output hdmi
speakers analoge headphones and digital output spdif
if you have an ati card it has digital output hdmi might be stealing your onbourd chips sound

You reinstalled windows, did you also use your motherboard CD to reinstall chipset drivers and sound drivers?

Yes i have checked it in bios too,it is still not working.



Yes tried that too.

have you trieded updating directx ?

Yes,i changed to my OS to windows 7 now,its not saying,"no audio device",like earlier,everything seems to be working properly except sound,cant hear anything  

I'm running Windows 7 as well and only recently started having a problem like that. At first, the audio device disappeared completely, so naturally, I turned off my computer for a while and started it back up. The device reappeared, but to my dissatisfaction, no sound was coming out of my speakers. Everything appeared to work fine, except that I heard nothing, maybe some white noise. Upon restarting again, the device was again missing from the "Sound, Video and game controllers" section of Device Manager.

After some sleuthing I discovered my "High Definition Audio Controller" was appearing under System Devices... wtf.

I've tried uninstalling, reinstalling, disabling and reenabling in BIOS, as well as seeing if it works in Fedora 11 like it used to.. wouldn't even work there.

I'd say it's pretty safe to assume that if it doesn't work in another Operating System, that I've encountered hardware failure. It's not like I can take it out and test it in another system, so I'm at the point where I'm going to buy a PCI audio card.

My suggestion to you is to download the Fedora 11 cd, you can run a Live Session (it means you can temporarily install the operating system to your RAM only, use it without affecting your harddrive) and see if your soundcard works.