I have a Matshita cd 594 for the reader, Nec NR 7700A for my burner, and the cd I was trying to copy is Command and Conquer Tiberian Sun. My computer is about 2 years old, I think it meets the system requirements fine for the program. It copied it fine, no errors or anything. Just whenever I put it in either drive my comp. freezes up. Ctrl+alt+delete won't work, mouse, nothing have to hold the power button.