If Microsoft Office 2007 has been deleted or uninstalled from your computer, it can be reinstalled using a valid product key. This product key can be found on the case that the Office 2007 CD came packaged in. If your system came with the Office 2007 software preinstalled, a sticker containing the product key can be found on your computer. The software is reinstalled using either an Office 2007 CD or by downloading the installation file from the Microsoft website.
Load the Office 2007 CD into your computer's CD-ROM or DVD-ROM drive. Download the Office 2007 installation file from the Microsoft website (see Resources) if you do not have the CD. Open the installation file after it has finished downloading. The "Enter your Product Key" screen will appear after inserting the Office 2007 CD or opening the installation file.
Type in your Office 2007 product key using your computer's keyboard. Click the "Continue" button in the bottom right-hand corner of the screen.
Click the white box next to the "I accept the terms of this agreement" text to place a check mark in it. Click "Continue" to proceed.
Click the "Upgrade" button on the "Choose the installation you want" page. Microsoft Office 2007 will automatically begin reinstalling on your computer. Click the "Close" button when the installer notifies you that the process is complete. Microsoft Office 2007 will now be reinstalled on your computer.
Activate the Office 2007 programs via Internet by clicking the "Next" button when the "Activation Wizard" is displayed. You must be connected to the Internet to activate Microsoft Office 2007 programs.
After reinstalling Microsoft Office 2007, you will receive a notification the first time you open each of the Office programs asking you to activate the software.