• Right click on "Computer"

• Select "Properties" and "System Protection"

• Choosing "System Protection" in the left pane

• Click on "Advanced System Settings"

• Under "Performance" click "Settings"

• Click on "Data Execution Prevention"

• Check the box: "Turn on DEP for essential Windows programs and services only"

• (If you want to use "Turn on DEP for all programs and services except those I select", then Add the program you want to run without DEP -the program you want to run-).

Example if you want to keep DEP (adding Comparator Fast for Windows):

:

ALTERNATE STEPS WITH COMMAND PROMPT:

If Windows DEP is "Always ON", the "Data Execution Prevention" tab seems disabled.

• Find Command Prompt under All Programs > Accessories

• Right click on Command Prompt and choose "Run as Administrator" (confirm with Yes if asked)

• On the Command Prompt window, type desired command (see description on cursive):
  
  
  BCDEDIT /set {current} nx AlwaysOff
  (to disable DEP completely)
  
  BCDEDIT /set {current} nx AlwaysOn
  (to turn DEP Always On -not recommended-)
  
  BCDEDIT /set {current} nx OptOut
  (to turn on DEP for all programs and services, except those you select)
  
  BCDEDIT /set {current} nx OptIn
  (to turn on DEP for essential Windows programs and services only -recommended-)
  
  and then press Enter. Restart computer to apply changes.

Example:

• Right click on "My Computer"

• Select "Properties" and "Advanced"

• Under "Performance" click "Settings"

• Click on "Data Execution Prevention"

• Check the box: "Turn on DEP for essential Windows programs and services only"

• (If you want to use "Turn on DEP for all programs and services except those I select", then Add the program you want to run without DEP -the program you want to run-).

: