Windows Upgrade Help and more

Agreed. If you're still stuck, have you checked for any pending driver updates in Device Manager, especially for your storage controller?

+1 Yeah, that registry edit is a common workaround, but have you double-checked in your BIOS to see if there's actually a setting to switch from TPM 1.2 to 2.0?

You could also check if there's a BIOS update for your motherboard, since older versions sometimes don't have the TPM setting available. Hope that helps.