Thank you @Fabio - I am not expert either, only learn as I go and as I help. Password I never deal with, so never tried to find. Do you know if it's always same thing in NVRAM for AMI BIOS?
So you 00 that, and then password is gone? * Edit, see below, check file above post #12, I found x5 instances of the AMITSESetup NVRAM type entries (one invalid NVRAM entry), all already 00'd out.
So must not apply to all BIOS types, or there is something else you missed when you compared possibly, and that is the area needed on this system?

If yes, @davidm71 - would you kindly confirm I removed password from your initial BIOS dump by flashing this back in, you can do FPT BIOS region only flash if you want since it's contained in the BIOS region
Never mind davidm71, I checked all instances of what Fabio showed above (x5) and all appear to be 00'd already, like his image for "without pass"

Well fortunately I did not need to resort to bios modifications to unlock this Dell motherboard. The first step was to obviously install the motherboard in my Dell Notebook and remove the old one. Was a time consuming procedure being that every cable is paper thin and very delicate work. At first the machine did not want to go on but after a couple tries Success! It worked though only to be greeted by the bios password screen that the Ebay seller had told me was wrong with the board. Time to get hacking!

The trick to unlocking the password is to make a note of the system serial number that is displayed on screen when the password request comes up. From there you enter that code into 'Bios-pw.org' and press enter. From there the site gives you a half dozen codes to try. The correct on was the one labeled 'serial code' and it was a long alphanumeric code that you have to type back into your notebook and then press 'CTRL'-'ENTER'.

That did the trick.

Now if only I could get an Nvme drive working..

Thanks

@Lost_N_BIOS - Never did a full research on all BIOS files i have here but i can see now this not apply to all BIOS.
I don't have the knowledge to do a full research on this theme, and to be honest, it's much more easy put the serial, MAC, UUID, MSDM key, etc on a BIOS dump without password.

@davidm71 - Glad you got it sorted out easily! Do you need NVME mod, or you know how to do that don't you?

@Fabio - what BIOS did you find this on anyway, maybe it's only certain AMI series? Anyway, I still appreciate the tip, I don't get asked often to deal with this, but at least now I know one thing to check each time just in case

@Lost_N_BIOS, check the link below. This one i removed the password with success.
[AMI]bios password reset for unbranded tablet

So, you had same unbranded tablet, or you compared his dump and then stock BIOS he uploaded later? Actually, it's unclear which of his links are stock BIOS and which are dumps (#1 he says is dump, then #3 in reply to my requesting stock BIOS, but the download itself says dump too)
But, I checked the BIOS you provided for him with pass removed, and BIOS from post #3 (Still can't download post #1 BIOS!) Is it same as post #1, different file name, so I assume not?
I only see the edit you mentioned in those images x2 - BIOS type is Aptio V, same as davidm71's, so this must not be a universal thing even for Aptio V BIOS. How did you know to find it in that random tablet BIOS at that location?

I used the file from post #3 and modified it. Never used a stock BIOS or another file without password, just changed the AMITSESetup for one default from the same file.
The first time i did this trick was on a Cyberpowerpc and it toke me several days to find it.
Already did the same trick with success on anothers laptops from various brands.

@Lost_N_Bios I don't believe I need a NVME Mod because I can sort of boot from the NVME drive though I am having issues. The first one being that after cloning my installation using Macrium Reflect onto the NVME drive the system fails to load. The wheel spins and I enter 'Automatic Repair' cycle where nothing ever gets fixed. Going to try to restore the boot files maybe that will help. Last night I was able to boot from my Nvme Adata drive after installing a fresh copy of Windows but after installing a Dell Power Commander App started getting random bluescreen stop errors. Doesn't happen when my original SATA drive was installed so must be some random app or configuration on the new install causing that issue. Anyhow got to try to restore the boot record now and see if I can get the image to load.

Thanks

But to all of you that have been looking at my bios file for a firmware solution I thank you. Sorry I did not need to go there. Would have installed the motherboard sooner if not for a busy work week. Thanks.

One curious thing about this board is that it slows down the NVME performance to half of what it could be via a power saving feature thats enabled via firmware.

Looking in AMIBCP for that feature with out luck.

Must be there just have not been able to find it yet.