Windows Vista

disable UAC

method 1: MSCONFIG

1. Launch MSCONFIG by either using the Run.. menu or via keyboard by holding down the Windows logo key and hitting R.
2. Click on the Tools tab.
3. Scroll down until you find Disable UAC and click on it.
4. Press the Launch button.
5. A command line window will appear saying the operation completed successfully. After that close the command line window and press the OK button for MSCONFIG.
6. You'll be asked to restart the computer. After restarting the obnoxious windows will disappear.

method 2: REGEDIT

1. Start REGEDIT by opening the Run... menu and typing regedit.
2. Navigate to the key HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System
3. Locate EnableLUA and set its value to 0.
4. Close REGEDIT and reboot the computer to complete.

disable double-clicking

1. Open the Windows Explorer by using the key combo of Windows Logo Key + E.
2. Click on the Organize button at the top-left.
3. Select Folder and Search Options.
4. Click the radio button next to Single-click to open an item (point to select).
5. Choose between either of the two sub-categories for single clicking. The first will underline file names in the same manner as your Web browser does with Web page links. The other will hide the underline until you move the mouse pointer over the file name (regardless of current Web browser setting for Web links).

activate the hidden Administrator account

1. Bring up an elevated command prompt. You can do this by clicking the START/Windows logo button. typing cmd in the search box, right-click on Command Prompt and select Run as administrator.
2. Type in net user administrator /active:yes then press Enter on the keyboard.
3. Close the command prompt.
4. Log out of the current account.