When you perform a search using the search box in the start panel, Windows Vista automatically searches the file index as well. The file index can be quite large because it includes all the files on your hard drive. One way to speed-up searching in your Start Menu applications is to narrow the scope of the search so that it does not include files on the hard drive:
Method 1: Registry Hack
1. Open registry editor using regedit.
2. Navigate to HKEY_CURRENT_USER > Software > Microsoft > Windows > CurrentVersion > Explorer and select Advanced.
3. Find and right-click on Start_SearchFiles and select Modify.
4. Set the Value to 0.
5. Restart the Explorer.exe process or reboot the computer.
Method 2: Start Button
1. Right-click on the Start Button and select Properties.
2. Click on the Customize button.
3. Uncheck Search Communications.
4. Set Search Files to Don't Search for files.
5. Click OK.