When the system was operating normally, I caused this problem by accidentally setting the security,system tab to deny file access.
After that goof, the C: drive was not accessible, and the security tab locked.
Can’t access drive C:>properties>security tab from either Administrator or built in
I enabled both accounts from safe mode, c-prompt, net user administrator /active:yes
Both Administrator accounts are active, and accessible from the log on screen. However neither may access the security tab on drive C:
How do I restore access to the C: drive ?