"HTPCs (Home Theater PCs) are targeted to users that want a computer connected to their home theater system to watch movies and videos, listen to songs, and play games. Since this kind of computer will usually be physically installed together with your home theater equipment, HTPC cases usually have the same size and color of home theater receivers, so your computer will look like standard home theater equipment."
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips