ERROR: You require permission from ************* to make changes...

Question

I've read the previous entries on this problem which describe changing ownership of the file/directory/whatever. I've done all of that and it seems to be correct because I show up in the <Properties> box as <Owner>.
But the message I get about requiring permission tells me that I have to have permission from *myself* - that's hard to figure out. 
I'm logged on to my administrator: machinename/user and that's the name I changed ownership to. Yet I get the error: "You require permission from machinename/use to make changes to this file."
So now what? I'm stumped
TIA
Aboonah

Answer 1

Aboonah,
There are standard permissions set to drives when Windows is installed. Usually the account created is given the same permissions as the standard Windows Administrator, which would explain why you could modify and delete about 3 months ago. Apparently something
happened along the way. Here are the two things that I would try.
1. Open up my computer --> Right-click the C: drive --> Click properties --> click the security tab --> Select Users (should be computername\Users) --> Make sure full control is enabled, if it isn't then Edit the permissions to allow full
control. (If for some reason it isn't enabled you may have to log in under the administrators account to make any changes)
NOTE: You might want to check the administrators permissions as well to see if they have full control, AFAIK you can't reduce their permissions, but I may be wrong there.
2. Click Start --> Right Click computer --> select manage --> Expand the Local Users and Groups --> Click the Groups folder --> Double Click Administrators --> Check to see if the computer name is listed under the administrators group -->
if it isn't then add it.
Let me know the results.
EDIT: Is this PC on a domain?