1. You could access RAID BIOS by entering CTRL+ I when you are booting up the computer. There you can see RAID status and any issues with hard drive.
2. Rebuild process will remain after next succesful boot.
3. Number 2 answers this question.
If possible, please take a picture of CTRL+ I and reply back with RAID status.
Yes. After the screen went blank, I waited awhile and the disk activity stopped so I assumed either the rebuild failed or it was done. So I hard reset the box. As you know, the RAID status is displayed briefly during boot. The next time I booted my computer, the RAID controller status flashed up that one of my drives had failed SMART. So I replaced that drive and the RAID rebuild completed successfully.
After the rebuild I ran a defrag analysis, and found (I'm embarrassed to admit) that the RAID volume was horribly fragmented. So I think I beat the disk to death....