Help resetting DEP back to default settings

Hi, I recently modified DEP using bcdedit.exe, and now the options for DEP under the Advanced System Settings window are greyed out. How do I reset it back to its default state? BTW I'm using Vista Basic.

Thanks

 

It is all in "Help and support"

Open the Control Panel (Classic view) _ System _ Advanced System settings(Over on the right) - Advanced Tab - Performance Tab - Settings - DEP.

Click the Data Execution Prevention tab, and then click Turn on DEP for all programs and services except those I select.

 

The problem is that that the options in that window are completely greyed out.

 

Which window?
Otherwise try this:
On the Start menu Click All Programs
On click Accessories
Right Click on the Command Prompt and, from the drop down menu, Select 'Run as administrator'
If the User Account Control feature comes up, press the Continue button or else provide UAC with the details it requires
When the Command Prompt window opens type: bcdedit.exe/set {current} nx AlwaysOn and press Enter
You should see a message saying that 'The operation completed Successfully.'
Close down the Command prompt window and Restart your PC.

 

Ok its back to normal now. Thanks a lot!