Windows XP Professional SP2 AMD Sempron 2800+ socket 754 ASUS K8U-X motherboard, with 6-channel audio and AC'97 codec with Line-Out port 512Mb PC3200 Kingston RAM nVidia 64Mb MX440 SE graphics card (AGP 4X), with VGA connection 30Gb 7200RPM HDD, with IDE connection 32X CD-ReWriter 54Mbps 802.11G Wi-Fi expansion card 350W PSU There is no sound coming through my speakers. I'm using onboard sound; after installing the drivers for the sound device, it gets recognized by Windows correctly from the looks of it, but there's no sound coming through. I've tried installing the drivers for the device from both straight off of the CD and using the Windows Add Hardware utility. I've reformatted several times and the problem still occurs. I've tried different speakers, from 2.1 surround sound to headphones I've checked to see if AC'97 is enabled , which is the audio codec of my chipset - and it is enabled. I've unmuted absolute everything and I've put everything to maximum volume and there's still no sound coming from any application. I thought it might be the drivers that I have and tried downloading them off of the website... still no success. I've tried out the sound, before and after installing any updates. I've flashed the BIOS. I've even cleared my CMOS and reformatted the hard drive and everything and still no success. After trying out every possible thing, I'm beginning to think that although the device is being recognized by Windows correctly, that it could still be my motherboard being faulty in some way. Oh and yes the speakers are connected through the Line-out port. Any ideas guys? Please help .