Hi, have a Sony vaio laptop running windows 7 home premium, and the sound hasn't been working for a while now. I've tried everything! looked at other forums, dug through my settings and options, uninstalled and re-installed, and run in safe mode (with networking). when i turn the laptop on in makes the starting-up sound, but nothing after that. in the 'normal mode' it says everything is running fine, even after troubleshooting, but in safe mode it says that there is no audio device installed, but the HD audio player is running. really desperate for answers. thanks in advance! ~Link