No Audio Device ??

[danny_may86]

I just recently installed Windows Xp Pro on my computer. There was no sound at all even when playing songs. So I went to my Motherboard website and downloaded everything that I needed. The sound drivers where RealTek AC97. I can play songs and movies with sound now. No problem. But Windows doesnt play any sounds. Like logging on or logging off, emptying recycle bin, someone signing into msn messenger etc. When I go to control panel and sound and audio devices properties it says No Audio Device. When I go to the sounds tab n try to play a windows sound is says 'Windows cannot play the sound %SystemRoot%\media\Windows XP Critical Stop.wav. Your sound card may be in use.' It may not be much of a problem like but I would just like to find out why it is, if anybody knows like. No worries if any1 doesnt. Thanks.

[danny_may86]

Oh n ive just realised then, that no sound works when playing something on websites either. Now that is a serious problem to me. anyone help me ?