Instructions
Find out your computer specifications. Click "Start" and type "dxdiag" in the "Start Search" box. Press "Enter."
Check the values for "Processor" and "Memory." Click "Display," and note the values for "Name" and "Approx Total Memory." Compare these values with the minimum requirements on the Flight Simulator X website.
Close nonessential programs such as Microsoft Office, Internet browser and antivirus software before installing the game.
Uninstall DVD software that may conflict with reading the installation disk. Click "Start" and type "Programs and Features" in the "Start Search" box. Press "Enter."
Locate any third-party DVD software such as "InterVideo Launcher" or "Nero 7" in the list of installed software and click "Uninstall." Follow the on-screen instructions and repeat for any similar software.