Have you reviewed the knowledge base article for your specific issue?
More specifically, your system does not meet the minimum CPU requirements.
Minimum System Requirements:
Microsoft Windows® 7, Vista™ SP2, XP (SP3 for 32 bit & SP2 for 64 bit), Intel® Core 2 Duo Processor 1.8 GHz or AMD Athlon x2 64 2.0 GHz, 2GB RAM
DirectX® 9.0c compatible graphics card or higher, sound card
2GB free hard drive space for installation. 10+ GB free recommended for video recording.
Windows Media Player 11 or higher
Internet explorer 7 or 8
Internet connection required for capture, registration, product updates and tutorials. Any Internet charges are the user's responsibility
One available USB 2.0 port