Data Execution Prevention is a relatively new technology in Windows that performs some additional memory checks to help prevent malicious code from being executed on a PC. This is generally excellent news for PC users, as it can prevent many viruses and malware from being run (even if a virus scanner misses them). However, it can also prevent legitimate applications from running if they execute code in a forbidden way. Unless you have a specific problem with DEP, it wouldn't be recommended to disable this useful feature. To disable DEP completely, launch the command prompt in administrator mode by typing [B]CMD[/B] into the start menu and pressing [B]CTRL + SHIFT + ENTER[/B]: [CENTER][ATTACH]237.vB[/ATTACH][/CENTER] Once the command prompt has loaded, type the following command and then press [B]Enter[/B]: [B]bcdedit.exe /set {current} nx AlwaysOff[/B] [CENTER][ATTACH]238.vB[/ATTACH][/CENTER] You can then close the command prompt window, and DEP will be disabled. Should you wish to re-enable Data Execution Prevention follow the same method but run the following command: [B]bcdedit.exe /set {current} nx OptIn[/B]