Permissions Denied, can't copy my own files

[Nuclearstorm]

I'm new to this site, so i apologise in advance if this is in the wrong section.

On my external hdd, I recently noticed that one specific folder has reduced permissions ( containing my game ISO's ). I have tried just about every guide on how to set, change, add permissions for myself, all of which end in the same way:

the same window will pop up:

Error Applying Security
An error occurred while applying security to:
G:\ ['here it lists the folder directory']
Access is denied.
Continue / Cancel


Notes: I am on the only Administrative account, with all other accounts disabled, guest disabled, and I did try this with Kaspersky Internet Security 12.0.0.374 enabled and disabled, and i have tried a virus scan and lockhunter x64 2-0-beta.

For all sub folders and files in the Problem folder, 3 permissions exist under the security window:
Everyone (with greyed out permissions, modify, write and Full control UN-checked )
S-1-5-21-['lots of numbers here'] (full permissions )
S-1-5-21-['different numbers, same quantity of digits'] (full permissions )

One additional thing: i have recently re-formatted, but i installed the exact same operating system (Windows 7 nVidia x64 v6.1, build: 7600) just this time i installed more updates with windows updater.

Please help, and thanks in advance.

 

[jimbo45]

Hi there
Sorry if you've already tried it but have you done a right mouse click on the disk==>properties==>security then open the security tag change permissions and add your user name

Then click all the boxes screen shot enc


cheers
jimbo

 

[sk0t0s]

you can also check the ownership.

 

[seavixen32]

Check out this tutorial: http://www.sevenforums.com/tutorials/24232-sharing-permissions.html

 

[Nuclearstorm]

@jimbo45: I have tried that method, and it just gives me the message listed above.
@timbog: I'm not completely sure how to tackle this problem via ownership.
@seavixen32: Your suggestion refers to sharing: "To allow full access to files you are sharing". Although, i have tried this method ( it is fundamentally the same as jimbo45's) and gave me the same message listed above.

Thanks to all of you guys, but your recommendations just didn't do the trick.

 

[flemur13013]

I use this "take ownership" rt-click context menu addition:
Add "Take Ownership" to Explorer Right-Click Menu in Win 7 or Vista - How-To Geek

 

[Nuclearstorm]

flemur13013, thank you so much, seems to have worked perfectly

 

[mados123]

Take Ownership, ftw!

Reviving the dead here but wanted to thank 'flemur13013' for the "Take Ownership" suggestion. It worked perfectly on Windows 8.1.