How to disable DEP (Data Executable Prevention) in Vista

  1. Click Start.
  2. Click All Programs.
  3. Click Accessories.
  4. Right Click on Command Prompt.
  5. Left click on Run as Administrator.
  6. Click the Allow button if it asks you for permission.
  7. Type or copy and paste the string below into the command prompt window:

    bcdedit.exe /set {current} nx AlwaysOff

  8. Hit enter and then you should see the confirmation:
     "Operation Completed Successfully"
  9. Reboot and DEP should be off.