Alright, I JUST installed a brand new OCZ 600W PSU, 2 more gigs of ram, and a SAPHIRE 3870 card about 20 minutes ago. I turn on the computer, and my sound is gone! I go to the control panel, (I have vista) and under the sound menu, it detects no devices. i go to my device manager and under the Sound Video and Game Controllers list, there is a "High Definition Audio Device" installed, up to date, and enabled. Under System Devices, there is a High Definition Audio Controller" installed, up to date, and enabled. Still nothing on the sound menu though, and any time I try to play a file (.mp3) with windows media player to test the sound, I get a pop up saying there is no sound device. Any ideas?