The User Profile service service logon failed.

[Curbkiddytech]

My grandma's laptop just started displaying this message whenever she tries logging in. I'm able to login to her profile in safe mode, and I have looked at the Microsoft solutions to fix this problem. What's troubling me is that I'm unable to access the Registry Editor or simply create another profile incase I want to just back up her files and transfer them over to a clean profile. She's the administrator on her account, so I should have access to both the Registry Editor and Managing another account.

Can anyone explain to me why I'm unable to access these controls?