cant delete folders in recyclw bin

Using Win 7.

Found a folder on my external hd that had a long alphanumeric name. Inside were a bunch of 4 digit folders and some files including "Hotfixinstaller". When I tried to delete it all, I got a permission denied. Used unlocker to delete it and went to recycle bin.

In recycle bin, the files deleted but the 25 folders wont. I'm getting:

Folder Access denied
You need permission to perform this action.
You require permission from the computers administrator to make changes to this folder.

I am the only account and am the administrator.

I ran the TSG Sysinfo app and the results are below, seem it didnt scan:

Tech Support Guy System Info Utility version 1.0.0.2
OS Version:
Processor:
Processor Count:
RAM:
Graphics Card:
Hard Drives:
Motherboard:
Antivirus: None

I run AVG, Malwarebytes and Spybot S&D weekly.

The folders were created last thursday, 3 days ago, when I wasent home.

Any ideas on a fix to clear these from the recycle bin?

Thanks for any suggestions.

Joe