No Audio Device Hardware all installed and working properly according to Windows XP

Hey guys I figured i;d ask here since I habe had good luck in the past from here. A few days ago I lost sound on my PC and I checked all of the spots and all of my audio hardware is installed and working correctly but I still have "No Audio Device in sounds and multimedia. I thought maybe the sound card was gone so i removed it and ran with the on board which detected and installed drivers and said was working but still same error with No Audio Device. I am confused as I have eliminated Hardware from the issue and am convinced its a Windows issue, I will try to update the Chipset drivers and such but I wanted to know if any of you had run into the same issue and had a fix for it I wanna continue making my Custom Guitar Hero Songs lol. Thanks in advance for all of your help.

Cheers!!

I just had to update something the other day for audio

www.update.microsoft.com