Dave,I followed your suggestions. I have audio when using the cd-rom but no audio within windows. I tried completely removing any trace of driver,ie,inf files and registry. Then disabling all non-essential ports,ie, serial ports,parallel ports. Then tried reloading original Sigmatel Ac97 onboard audio drivers. Still no audio within windows,ie,start-up,exit sounds, etc. This board has no audio processing chip. It uses codecs. There were other versions of this mobo that used the Ct. Labs sound blaster chip and the CMI8738 chip. I am completely stumped on this. Sure hate to dismantle this system but from the looks of it. I guess I might have to. Anyone out there with any clues about this problem, I sure would appreciate the help. Thanks!

"This board has no audio processing chip. It uses codecs." Not true, you have to have a chip. A codec is simply a set of instructions that tells the audio chip how to process the type of audio. Since sound cards are so cheap these day, how about installing a sound card instead of using the on-board one.

Another angle. Boot into Safe Mode and remove Multimedia from Windows Setup as follows: (Note: you may need the Windows Me installation CD) -Go to: Start>Settings>Control Panel, 2x clk: Add/Remove Programs. -Choose the Windows Setup Tab. -In the list of installed components uncheck Multimedia. -Click Apply, OK, close Control Panel. Next, remove media resources entries from the Registry. Back up Registry first!!! Next, -Start>Run, key in: Regedit -Expand (+) HKEY_LOCAL_MACHINE to: HKEY_LOCAL_MACHINE\System\CurrentControlSet\ Control\MediaResources -Under this key, click once on the yellow folder by: Aux -Press: Delete on the keyboard -Click: Yes to confirm key delete Do the same for the following folders: Midi, Mixer, and Wave. Next, remove any sound driver remnants: -Right click: My Computer, choose Properties -Click on Device Manager tab -Click on: (+) Sound, Video, and Game Controllers to expand -Remove all sound card related items under this category by selecting the desired item and clicking: Remove Once all items are removed, Sound, Video, and Game Controllers no longer appears in the list. Now reboot, and reinstall the Sound Card Drivers. (As Windows reboots it redetects the sound card and partially reinstalls multimedia components.) Next, reinstall the Multimedia component as follows: -Start>Settings>Control Panel, 2x clk: Add/Remove Programs -Choose: Windows Setup tab -In the list of installed components check Multimedia, click: Apply, OK, and close Control Panel. Check the Sound.