no audio device after uninstalling antivirus?

I uninstalled a trial version of NOD32 antivirus as the only change to my system today and at first I noticed the internal beep PC speaker making noises but didnt think much of it until I tried to play an mp3 and WMP said it cant play it becasue there is a problem with my audio device.

I then tried it in VLC media player and it is just silent.

Then I noticed nothing at all would work with sound! So i ventured into control panel and under sound/audio devices it says there is none installed.......how do I reinstall my audio device which is built into my motherboard???

I dont know why it was disabled, anyone know whats going on?

P4 2.6ghz
Realtek AC97 onboard soundcard
gforce 5200 graphics card
1gig ram
80gb hdd

 

Hi,

The make of my motherboard (judging from the box I pulled ou tof the cupboard is an albatron intel 865PE/PE Pro. It was not purchased from dell or someone like that but a local computer shop, about 4 years ago.

It says about the audio:
6 channel audio, realtek ALC650 codec supports 5.1 channel audio effect

Where do I go (in control panel?) to install my audio device?

Thanks for your help.

 

Ok wjilst playing around I have found something in the device manager that may be the problem.....I dont know what the microsoft kernal system audio is but it apparently has a problem.

My AC97 though it says is working fine which I dont understand.

so here is some screenshots that may assist in the problem solving:

http://i191.photobucket.com/albums/z201/rudyard_2007/audio1.jpg


http://i191.photobucket.com/albums/z201/rudyard_2007/audio2.jpg

 

Can you click on the Driver tab, then driver details and list the files?

 

http://i191.photobucket.com/albums/z201/rudyard_2007/audio3.jpg

Adrynalyne, hope this helps!

edit* wrong photo, fixed now!