One of the user folders under 'Users'.Which folder did you "accidentally" click?
Perhaps this helps:
- open the command prompt
- in the command prompt type cd.. than dir
You should see something like
Directory of C:\Users
03-05-2017 22:19 <DIR> .
03-05-2017 22:19 <DIR> ..
03-05-2017 22:21 <DIR> Default.migrated
14-03-2017 19:03 <DIR> defaultuser0
05-05-2017 16:55 <DIR> your_name
10-05-2017 15:54 <DIR> Public
0 File(s) 0 bytes
7 Dir(s) 189.134.249.984 bytes free
Than try
ATTRIB -R your_name
This should clear the read-only attribute
I will keep my fingers crossed
? there are very few there. Normally, you would seeOne of the user folders under 'Users'.