It's possible that your Pheonix CD is incompatible with the Windows 8 operating system. To attempt a possible installation, go to Computer or press Windows key + X and choose File Explorer. After this, locate the CD and right-click it. Choose Explore, locate the executable file (installation package) and right-click it as well. Select Troubleshoot Compatibility and let Windows assess the situation. Choose a prior version of Windows and initiate the installation. This is the only way to install the application in an unsupported environment.