Disabling User Account Control (UAC) in Windows 7
This document contains instructions for editing the registry. If you make any error while editing the registry, you can potentially cause Windows to fail or be unable to boot, requiring you to reinstall Windows. Edit the registry at your own risk. Always back up the registry before making any changes. If you do not feel comfortable editing the registry, do not attempt these instructions. Instead, seek the help of a trained computer specialist.
Click Start, click Run, type regedit, and then click Enter.
If prompted to enter your credentials by UAC, do so and/or press Yes to continue.
Navigate to the following registry subkey:
In the details pane, locate the EnableLUA key (REG_DWORD type).
On the Edit menu, click Modify. In the Value data box, type 0 (zero), and then click OK.
Exit Registry Editor, and then reboot the computer.