Unable to use administrator privileges

[Jgibbs347]

I own an hp touchsmart 310-1020 pc running windows 7 home premium 64 bit.
I was trying to sync my iPad 2 to iTunes via USB, but iTunes kept freezing up as soon as I clicked on any function. So I tried to repair it via apple's iTunes download. That didn't work as I still had the same issue. So I uninstalled it. And then tried to reinstall it.
It downloaded just fine, but when it tries to install it pops up with a message saying "You do not have sufficient privileges to complete this installation for all users of the machine. Log on as an administrator and then retry this installation."
My problem is that I am logged in as the administrator, and as such should have full privileges. How do I check that? And are there any other ideas on what the problem is? PLEASE HELP!!!! Am very frustrated!!

 

[writhziden]

Did you remove and re-install the Apple software in the proper order: Removing and reinstalling iTunes, QuickTime, and other software components for Windows Vista or Windows 7

If not, use a restore point to revert to an earlier time: http://www.sevenforums.com/tutorials/700-system-restore.html

 

[Bumpkin]

"You do not have sufficient privileges to complete this installation for all users of the machine. Log on as an administrator and then retry this installation."
My problem is that I am logged in as the administrator, and as such should have full...

Even though you are an administrator, try right clicking on the install file and select "Run as administrator".