Trying to create guest Servers 2016 Servers on Server 2016 Hyper-V with error No x64-based UEFI boot loader was found

Resolving "No x64-based UEFI boot loader was found".
I'm trying to get my (Gen 2)  guest servers up and running on Hyper-v with my revamped Server 2016 host that has all the latest hardware. (DDR4, Dual I5, megaraid).
I've used DISKPART, DEAMON TOOLS, WINISO and  ISODISK. I can make a UFIE USB drive that boots from the PM but not as an ISO.  Been trying t ISOs with not only the retail copy but many other downloaded versions of Server 2016 but they all return the same error- "No x64-based UEFI boot loader was found".
I've tried all the simple stuff. Secure Boot is turned off. Tried copying the ISO to Public folder. Made the ISO in every format (fat 32, NTFS)
 Nothing seems to work.
Andy CarterAsked:
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Philip ElderTechnical Architect - HA/Compute/StorageCommented:
Is this to set up the host?
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David Johnson, CD, MVPOwnerCommented:
either your missing the press a key prompt from the vm or the iso is corrupted
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Cliff GaliherCommented:
What did you use to install the host?
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Andy CarterAuthor Commented:
Host is good. Setup with same UEFI Server 2016. This is to setup guests on hyper-v. I used disk2vhd and setup one guest but of course I would like better control than that (core, nano or whatever). Keypress not the issue
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Andy CarterAuthor Commented:
No UEFI....
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Cliff GaliherCommented:
Still, what did you use to install the host? I agree that this sounds like a corrupt ISO so I'm wondering where the source media came from.
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Andy CarterAuthor Commented:
I used a retail version version USB 3.0 but I've tried it and I've tried the eval version and a couple of others... Same thing. In kind, the same versions boot and install on the host. I have tried with spare disk. Too many variations of media to be corrupt in my opinion
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Andy CarterAuthor Commented:
In other words I can burn these ISOs to flash drive and they work perfect on host showing as UEFI at boot
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Philip ElderTechnical Architect - HA/Compute/StorageCommented:
Microsoft Virtual Machine Converter should be used to take physical to virtual.

There should be no issues using a direct from Microsoft ISO file to load a Generation 2 VM OS. None. There've been issues in the past with flaky ISP connections flipping a bit and corrupting the ISO download.

Change source. Change connections.
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R@f@r P@NC3RVirtualization SpecialistCommented:
good afternoon

The virtual disk is generation 1 or generation 2?
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David Johnson, CD, MVPOwnerCommented:
use rufus to make the boot usb drive
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R@f@r P@NC3RVirtualization SpecialistCommented:
good afternoon

You should try the installation against ISO, your iso must be corrupt, try another ISO to validate if you can do the installation without problems.

Did you validate that on the host, the virtualization feature is enabled?

Regards..
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R@f@r P@NC3RVirtualization SpecialistCommented:
Hello

What model is your physical server?

I remain attentive to your comments.

Regards...
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A_AmericanELectricCommented:
Hi. I didnt thyink so because I tried so many including a tech prev. copy but it was my own lack of exp. in this area and a corrupt ISO because I got a copy of Hyper-V Server to run. Then I did a repair and CHKDSK to clean and convert the VHDX to GPT. Then I tried to load my copy from withing HVS but it kept failing so I copied the files from my copy to the HVS ISO. That loaded successfully. I think the problem was in the boot files, Maybe boot.wim??? Anyway I have a good seed copy now. Thanks everyone!
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A_AmericanELectricCommented:
Why can I not accept comments for solution? Been away from EE for awhile...
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andyalderSaggar maker's framemakerCommented:
Because this isn't your question.
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A_AmericanELectricCommented:
LOL.. Actually it is but  I was automatically signed in under my old account. My domain has changed and I was unable to sign in yesterday. Funny.
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Andy CarterAuthor Commented:
Thanks to all of you for guiding me to the answer...
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McKnifeCommented:
Your screenshot looks familiar. You can provoke it if you turn on the gen2 machine immediately after setting an ISO to boot from. Funny thing is, if you just reset the VM, it boots the ISO alright. This bug is old.
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Andy CarterAuthor Commented:
Thanks LVL 59 I'll remember that
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Windows Server 2016

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