UEFI BIOS Setting for T7910

On a Windows update resulted in a "Preparing Automatic Repair". Every option in Automatic Repair got me nowhere. So, I restore Macrium Image 5 days old and got it back up. However any software installed that required a boot only gets me back to square one of Preparing Automatic Repair. Nothing I do will allow me to more forward. Tried installing from Windows Media Creation tool which fails at the "Next" button after first selecting partition to install to. I downloaded the Dell Recovery Tool. Selecting reset, the next window, both choices are "grey out". NO install tool will run to completion.

I have run the Dell diagnostics tool with extended memory tests. All test pass.

Then throwing gasoline on the problem, Dell Support told me that I was not going to be helped because the system was over 5 years old. Even with me paying for help? NO HELP POSSIBLE. It does not matter how long you have been a dedicated Dell owner. NO HELP!

What I really would like to know, what are the UEFI BIOS setting for a T7910 PERC RAID5 system with 2 Processors, 2 CD drives. in desperation, I checked "restore default", when I didn't see how to select the boot devices I should see. Is it UEFI, Legacy, Secure boot? I have tried them all. If I choose ADD a device, I am shown a list of cryptic entries. Picking one to see what happens returns on file found.

So, all I want from Dell is information how I should setup the BIOS. The documentation only explains some of the choices, not all. 

So with Dells lack of help, paid or otherwise, my confusion on the BIOS setting, all I have here is an expensive "boat anchor". Such a shame to happen to a relative nice system that has some little glitch that fails to let me reinstall from scratch. 

PS: As a side note, whenever I restore the Macrium Reflect image, the machine works perfect until the next boot. This must be some clue.