Repair Function does not present OS to 'select'

Setup/Scenario                                                                                                                                                                    I have a PowerEdge 830 that has 4 hard drives in a RAID 5 set managed by a PERC 4e DC card. Server 2008 R2 was loaded onto it. There is a separate

Issue                                                                                                                                                                                         It It BSOD's and I cannot get into OS even via Safe Mode. I discovered that 1 of the SCSI RAID drives was offline and needed to be replaced. I did replace with a new hard drive and went into the Config utility and 'rebuilt' the drive.  then did a Consistency Check and drive showd as 'optimal'. I reboot and still I BSOD

Problem                                                                                                                                                                            I have booted with a Win 2008 R2 server disk and selected 'repair'. After I choose English language, the next dialog box (System Recovery Options),  that is supposed to present the OS drive... instead is blank. It says "If your operating system isnt loaded , click load drivers and then install drivers for your hard disks"

And when I cancel out, I am presented with the System Recovery Tool box with 3 choices:                          1. System Image Recovery (There is not one)                                                                                                       2. Windows Memory Diagnostic                                                                                                                               3. Command Prompt

If I select Command Prompt, I cannot do SFC becasue it says a repair is pending. And my drive isnt recognized anyway.

I have gotten the correct drivers from Dell and put them on floppy. And when I select 'Load Drivers' it does in fact present me with the Perc 4e/DC RAID Controller option (amongst others). After I select my card, it goes through about a 30 second 'warm and fuzzy' and says 'Adding Drivers'. But then i am presented with the same screen from a moment ago without an OS to select to repair.

Question                                                                                                                                                                    How do I go about repairing this O/S? Or do a FDISK /MBR?                                                                           Or,                                                                                                                                                                                 How do I build a new O/S on a separate hard drive and present it to the 4 SCSI drives to maintain the data and RAID config?