Registry Editor in Windows Vista - Boost Performance

How to clear pagefile at shutdown to restore disk space and fast performance:-
  1. Start Registry Editor (Start » Run » Type in box regedit and press enter
  2. Change the data value of the ClearPageFileAtShutdown value in the following registry key to a value of 1:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management
  3. If the value does not exist, add the following value:
    Value Name: ClearPageFileAtShutdown
    Value Type: REG_DWORD
    Value: 1
  4. Restart your computer or Explorer Process for the change to take effect.