From Windows Help.
Change Data Execution Prevention settings
Data Execution Prevention (DEP) is a security feature that helps prevent damage from viruses and other security threats by monitoring your programs to make sure they use system memory safely.
If you choose to protect all programs, you can still turn off DEP for individual programs. If you suspect that a program does not run correctly when DEP is turned on, check for a DEP-compatible version of the program or an update from the software publisher before you change any DEP settings.
- Click to open System.
- Click Advanced System Settings. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
- Under Performance, click Settings.
- Click the Data Execution Prevention tab, and then click Turn on DEP for all programs and services except those I select.
- Select the check box next to the program that you want to turn off DEP for, and then click OK.
If the program is not in the list, click Add. Browse to the Program Files folder, find the executable file for the program (it will have an .exe file extension), and then click Open.
- Clear the check box next to the program that you want to turn on DEP for, and then click OK.