In the past few weeks, my entire system seems to have gone crazy on me. For the past few years, I've been running an ASUS M3N72-D mobo with an AMD Phenom 9850 quad core. I have 3 SATA drives, one HD and two DVDs, and one IDE HD. I had been having detection issues with the DVD drives for awhile, but it was intermittent, so I let it go. Then, about a week ago, all my SATA hardware just disappeared. The BIOS no longer detects any of it as being connected. The IDE works fine, though I did have to replace the power supply tonight. I had hoped it would fix the SATA issue as well, but it didn't. If anyone has any ideas, they'd be very much appreciated.