Hi, I had everything running great in win 7 rc, then I decided to add in a new HD and win 7 would not boot. So I put everything back the way it was, and win 7 still won't boot. I have 2 500GB SATA Intel Matrix RAID set I created when I first installed win 7. The RAID set comprises 2 partitions. The first partition C: drive contains my OS and other supporting files and the other partition D: has other files and stuff. I also have another stand alone 160GB SATA drive E: which was currently empty. So the boot order in my BIOS was: RAID Volume 1 RAID Volume 2 SATA 160GB What I did was simply hook up an 80GB IDE drive that was already installed in my computer. The jumper is set to Master and I went into the BIOS to make sure the drives were in the correct boot order since adding the IDE drive automatically sets that drive as the first HD. So I configured my drives in the BIOS as this: RAID Volume 1 RAID Volume 2 SATA 160GB IDE 80GB After configuring the BIOS and restarting I get a message something like (paraphrasing): "Boot Media Not Detected Insert proper boot media and press any key to continue:" Just pressing a key brings up the same message. So I decided to disconnect the IDE drive and set up the BIOS the way it was before I tried to hook up the IDE. Well I don't understand what's happening, but I keep getting that message. And I can't boot into windows as before. Anybody know what's going on?