Windows 10: How to access UEFI settings in WIN10 when usual fixes do not work

My Dell XPS8920 Desktop PC runs WIN10 Home, version 20H2, OS Build 19042.1415 with Windows Feature Experience Pack 120.2212.3920.0 Following a Clean re install of WIN10, I am unable to access the UEFI settings via the usual path of Settings> Update & Security> Recovery > Restart Now under Advanced Setup> Troubleshoot> Advanced Options> UEFI Firmware Settings> Restart.When I try, the above, the PC screen goes blank, the fans stay on but nothing happens. To get the PC working I need to press the PC's power button for a few seconds to turn it off then press it agai

:)

 

Uefi access


When I try to access my UEFI on a Windows 10

1. Navigate to settings. ...
2. Select Update & security.
3. Select Recovery from the left menu.
4. Click Restart Now under Advanced startup. ...
5. Click Troubleshoot.
6. Click Advanced options.
7. Select UEFI Firmware Settings.
8. Click Restart.

The screen goes blank and stays blank for ever, I have to reboot to start windows.
I updated my UEFI/BIOS after upgrading my OS from 8.1 to Win10 I found out later I should have updated the UEFI/BIOS
first then Win10, I have to access the UEFI/BIOS to change the boot sequence to access my USB WD hard drive BACKUP AND RECOVERY Win10
I hope someone can help thank you in advance.
More info Board: Acer IPXHW-RL 1.02
Bus Clock: 100 megahertz
UEFI: American Megatrends Inc. P11-A3 07/16/2015 This is the latest UEFI/BIOS I upgraded to.
I want to reinstall windows 10 and hope this will cure the problem?
Regards

 

Settings can't be opened using the built-in administrator account


Hello,
Unfortunately I have the same issue as Dabz from upgrading win7 to win10.
I've tried opening settings using all the suggested methods and it will not load using my account with Administrator access nor the built-in Administrator profile. I also tried other methods not listed such as using Run. Control panel is just a stepping stone to add users in Settings.
I'm also having explorer.exe issues, which I believe is preventing Settings from loading.
Using cmd (Admin) I successfully created a new user profile [and granted admin access also using cmd (Admin)], however win10 will not allow this account to log on. win10 does not list this new user within control panel but it does in the start menu. win10 will not allow to log in or switch to the new account via the start menu either.
I can access settings in Safe Mode but this will not allow me to create a new account.
Any help/suggestions will be greatly appreciated.
Cheers

 

Programs not working

In post 26 there were steps listed to fix the operating system corruption.
Are you able to follow them?
In post 29 was the suggested dism repair command.