Insert the Pro Tools installation disk in the computer's disk drive, and close the tray. After the system has had a moment to initialize the CD, the installation program will appear automatically. Walk through each window of the installation wizard, moving on to the next screen by clicking "Next" when needed.
Wait for the files to copy to the hard drive. Depending on the speed of the computer, this may take several minutes to complete. Once the installation process has finished, close the installation wizard.
Locate one of the shortcuts to Pro Tools. These can be found on the desktop or start menu. Right-click on it, and select "Properties." Click on the Compatibility tab, and check the box next to "Run this program in compatibility mode". Select "Windows XP" from the drop-down list, and check "Run this program as an administrator." Click "Apply" and close the window. Double-click on the shortcut to launch the program.