Hi Guys, My PC has worked fine until earlier today. All sound disappeared and no devices where found under Control Panel. I tried loads of different things after reading other threads found on this web page. Unfortunately, all failed. I then booted off CD and tried to repair the issue (this is after uninstalling and reinstalling all the drivers). This seemed to be working well until several .dll files were unable to be copied from the cd, even though they were present. However, I chose to ignore and continue. The repair concluded and Windows booted up fine (but again with the audio problems). I restarted my PC and now it blue screens each time with critical errors. I really can't afford to lose the data on the hard drive by formatting (It contains my recent wedding pictures which I cannot replace). Please, if anyone knows of any alternative methods...HELP!!