If you are experiencing an error 740 message in Windows Vista or Windows 7 when trying to launch (load) an application, it means the software was installed (or has been configured) to Run as Administrator.
How To Prevent Error 740 Messages
Windows Vista and Windows 7 use a security measure setting called User Account Control. With different levels of permissions, it can cause problems when trying to run software applications as a normal “user” instead of a system-level “administrator”. Specific actions by a “user” will cause User Account Control to display a dialog message which will allow you to elevate your Windows permissions level to administrator. Any software application running with normal user permissions will not allow User Account Control this option.
Error 740 Solutions
1. Simply right-click on the application icon and select Run as Administrator. Most the time, this will solve the problem.
2. Turn of UAC (User Account Control)
Open up Control Panel, and type “UAC” (without quotes) into the search box.
Click the link for “Turn User Account Control (UAC) on or off”.
On the next screen, uncheck the box “Use User Account Control (UAC)”, and click OK.
This process is for Windows Vista and it’s slightly easier in Windows 7.
Is the laptop running Windows Vista, 7 or 8 and are you trying to install MEP 14?
If it is running Windows 8 then it is highly probable that the software will not recognise the DVD drives. This version of MEP was not designed to run on Windows 8 - you will have to upgrade to MEP 2013.
If you are running Windows 7 or Vista then the account you logon to the laptop with does not have enough privileges to run the software ie it is not an administrator account - Gryff has provided a detailed fix for this.