Ubuntu went well! I spent some money to buy several parts, but I was afraid I wonder it might be good for my purse and mind to buy windows PC made of computer maker. I felt unhappy. I said to myself, "I wanted to make PC by myself once. So it is the way I have to pass now or in the future anyway. I did the best." to calm myself down. But now, all scenes have been changed. How good Ubuntu is! How comfortable wireless keyboard and mouse is! Display is beautiful! I learned connecting Internet is the most important thing to contemporary personal computer.