Here's the approved and tested list-- Dell computers tested for upgrade to Windows 11 | Dell US

That is the list I referred to in my original post. Dell describes that list as "This article lists all Dell computers that will be tested for upgrade to Windows 11".

So the question remains; has Dell tested this laptop? If so, what were the results, and what do I need to do to allow my laptop to pass Microsoft's PC Health test? It does not pass today.

@GWizITBiz 

Just to clarify, you had to also "Disable" Secure Boot to start the upgrade???

Or just PTT???

Regards,

U2

Secure boot was enabled, and I am using UEFI boot mode.

I turned on PTT Security and Voila! My laptop now passes Microsoft's PC Health check and is listed as meeting all requirements for an upgrade to Windows 11.

Did you have to switch to UEFI boot mode?  Did you have to reinstall windows after that?

Does this mean the TPM 2.0 is equivalent to the PTT security?

Welcome to the Dell Community @BernardGutnick 

Do you want to do an "Upgrade" or a "Fresh" install???

Best regards,

U2

I want to upgrade my Dell 5570 with latest Windows 10 version to Windows 11 preferably keeping my applications and files 

I have Secure Boot Disabled.

How do I convert it from Legacy to UEFI Boot?

When I have it in Legacy, I see a list of drives for booting.

With UEFI, the list is empty and it boots to the SupportAssist.

If I can get it to boot with the UEFI then I can set the PTT to Enabled. (Can't be set with Legacy)

How do I get it to boot after I change it to UEFI?

Thank you.

Bernard

strange. my DELL INSPRION 5579 (still in the 5570 series) upgraded to windows 11 fine. I Dident have to go into the bios and enable anything. it pretty much did everything for me after a weird fan error.