Heyy - I'm new here, just signed up to see if I can get some help on this problem I'm having. Sorry if anyone has asked this before, so if you don't mind, bear with me. My system is a Dell Inspiron 8600 - got it several months ago and it's been working perfectly. I've been happy with it until last week. The problem's been driving me crazy and I've done everything I know to try to fix it - just doesn't work. My system: Dell Inspiron 8600. Intel Centrino 1.5 GHz. 512MB RAM. Microsoft Windows XP Pro. 60GB HD. 128MB ATI Mobility Radeon 9600 Pro Turbo. SigmaTel C-Major Audio (not sure if that's the codec/driver or sound card itself - sorry). This kinda started a week ago - not sure if it's due to something I installed. But the only recent things that I've installed is the Microsoft Beta version of its Antispyware. It started off with winamp screwing up, saying that I've got no sound driver to play music. I reinstall my drivers, which are off from Dell - and the music works. After using it, I'd shut my computer down, and turn it on say the next day to see the same problem. I reinstall driver and it works. Next time it would not. But sometimes I would start the computer and open up winamp to find the music playing - so I never really know when I gotta reinstall my drivers. But once Winamp works, quicktime may play only video and no sound. But sometimes it works perfectly. It's just really random. Reinstalling my driver seems to fix the problem, but it's annoying the way I have to test to see if my sound works, then reinstally it EVERYTIME it doesn't. It's not just that. Windows Media Player doesn't recognize my sound device AT ALL. I've gone to device manager and checked the thing a thousand times, and it says there are no hardware conflicts, and that the device is working properly. I disable and enable my sound driver and try WMP again, but it's still not working. I head to control panels and check out my sound options, which are totally blocked off because even THAT says I've got no sound device. But then at the same time, winamp plays music through my laptop's speakers. I'm not sure if any of these programs will relate to my problem, but i've tried reinstalling the K-Lite Codec Pack, as well as some DIVX bundle, and my sound drivers, and I've even tried reinstalling WMP10. Nothing works. Winamp detects my sound device and can play music - sometimes. When it doesn't, i reinstall my sound driver and it works. Same with quicktime - but quicktime plays the video without sound, doing a better job than winamp playing nothing. But WMP10 is sounds totally dead to me. I've installed several codec packs, DIVX/XVID, all sorts of codecs and nothing works. This problem has been seriously driving me nuts for the past week or so. I just don't know what to do, so please help me if any of you know what's wrong. Thanks!