Methods vista system to enable or disable DEP's

  
description of the problem
how to start or to disable DEP (Data Execution Prevention) in the vista system?

solutions
vista system is off by default DEP, if Need to start DEP can be set in the command prompt
Click Start-->All Programs-->Accessories--> Command Prompt
Enter bcdedit.exe /set {current} nx alwayson
Enter DEP to turn on DEP.
The shutdown command is as follows:
bcdedit.exe /set {current} nx AlwaysOff
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