After Windows 7 installation don't have any permissions on C:

I have used this forum many times and it help me without need to register but now i came to a problem that i had to join so Hi everyone and bigups!! :)

This is the problem:

I installed Windows 7 Ultimate x64 SP1 and don't have any permissions on C:

Like for example i cant change or delete anything from Program files (x86) or Program Files! Folder Access Denied. You need permission to perform this action.

I am administrator on my system, and i even tried Built-in Administrator Account, still no permissions, same as my normal admin account, if i try to take ownership i get ERROR: Access is denied, same on both admin accounts.

I read many threads on this forum but no help for my problem, i really need to fix this cause this is my studio pc and i cant setup some software needed for my production because of permissions

I never seen this problem before, i have used windows 7 as administrator on my other computers and they all work normaly.

can someone please help me, should i reinstall or its something simple, i tried TakeOwnership app that did the trick but i still cant install some applications and vst plugins??

Follow this post, this should be helpful. The problem is due to the administration rights, I guess.

No Permission in Windows 7

tnx, but this doesn't solve my problem as i stated this in my question

In the absence of any other replies it would seem that your Windows 7 install is corrupted somehow.

I think it would be easiest for you to format your hard drive and carry out a clean install.

Clean Install Windows 7

As a matter of interest, can I ask how you acquired your Windows DVD?