Windows 10: How to grant total admin priviliges on my account on my own PC

Hello,I want to disable the antimalware service on my PC completely because it is using a lot of RAM.When i try to disable it though it says access denied.I am almost sure i have administrator priviliges on my account but i cant disable that specific service.I appreciate any response

:)

 

Security Priviliges

How do I assign system priviliges to my Admin Account?

 

Program says I don't have priviliges to run it even on admin account

Restart the computer and try again.

 

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