i've read some of your previous threads but i dont understand about mobos and pcis pls help me. it all started when my msn messenger's alerts stopped making their sounds whenever someone signed on or something, then yesterday the sound would not work at all and i went to the sound controls in the control panel and its all grey, for some reason whenever i turn my computer on, i can listen to music and watch videos but once a while has gone by the sounds disappear.. pls help me. if those mobos and pcis are neede pls guide me step by step in getting them for you. thanks!