Interesting, I cannot see the image you posted.

The existing OS drive (PCIe) is in the first slot in an adapter, which is in a slot on the Mortherboard. The new PCIe drive is inside the same adapter.

If I wake up early, I would run to the office to take a pic of the setup. If I can't in the morning, I will go to the office after hours to take a shot of the setup. I work from home and remotely connect to the work computer I am trying to upgrade it's hard drive. Depending oh how cold it will be tomorrow morning, and my car parked outside (Anchorage, AK), I'll see how things go.  Till then!

Thanks.

This is what I found in Community Help regarding missing images:

"For your protection, your community requires a moderator to approve all uploaded images before they can be displayed. Although you can see your uploaded images that are awaiting approval or flagged for review, other community members who view your images can only see the ones that have been approved."

So, it will take some time before you see it!

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Interesting, at least now I know about images on this forum. Thanks for the information.

One other option I tried to get to the BIOS was through Windows BIOS Setup , which still did not work. It went past getting into the BIOS setup. I have requested the office IT person to see in to my PC getting into the BIOS setup. I really need to see what the BIOS has, and to see if the port is disabled. I'll keep you updated when I get to the BIOS setup.

Thank you!

The hardware setup looks good. This is very strange since one PCIe drive works, but the one next to it doesn't!

The slot on the motherboard must be on in the BIOS, otherwise neither drive would work. Is the Samsung stick dead?

I'm interested in how this turns out!

I'm clutching at straws here, but I just realised that the Dell Adapter Card is only validated for 1TB, 512GB, and 256GB drives. Do you have access to one of these? If you do, try it.

Could it be that  the 500GB capacity is the problem?  Fingers crossed!

i think you may be running it to, your system being RAID and you might find it easier to clone your Present OS drive to the New 970, Macrium Reflect Free would be the go to Software to accomplish this with. Video on how to accomplish these  

You will save yourself hours of Reconfiguring and installing software by cloning.

Dell used RAID rather than AHCI on a lot of computers, Still doesn't explain why Windows media won't boot, as F12 would be correct for a one-time boot menu. Someone suggested updating your BIOS, that might solve that issue.

My PC will only run on "RAID ON".

I got a 2.5" SATA SSD drive and cloned the system (I used Acronis True Image for Crucial). Removed the M.2 drive and connected the new SSD drive, the system won't boot. Since it came with the M.2 style, the other ports may be disabled. Frustrating I cannot get into the BIOS to be sure. I tried two different keyboards and through Windows to the Command Prompt, still neither F2 nor F12 works. It's past the warranty period for DELL technicians to help out.

Don't know what else to try.

Chances that the cmos battery is low ( has definitely a bit of years by now ) and is causing this weirdness when pressing F2 / F12 ?