how do i get past the "do not have sufficient privileges" error message installing flashplayer?

I've recommended several things here in the forums and like you, I've seen zero success.

Run as Administrator = no luck.

Take ownership of the c drive = no luck.

Create a new (admin) account = no success.

I've even seen one poster who reformatted and reinstalled Window 7, and no luck.

Frankly, I'm at a total loss.