Unable to Change Administrator Status in Control Panel

I'm having this problem where I go to Control Panel, to users, to my user, then to change account type, and my account status is Standard user. If I try to select the Administrator, the apply button grays out. I'm in the Administrators group, I know this. I enabled the local Administrator account and checked it's status. It was a Standard user as well. I tried to turn off UAC, the same issue persists. Does anyone know where to go from here?

what version of windows?

hope this helps

https://support.microsoft.com/kb/298252

It's just Win7 Home Prem.

Open an elevated Command Prompt and run the following command:

net localgroup administrators John /add

Replace John with the name of your desired account. This should promote your standard account to an administrator.